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12425910520780 = 2254019154589581
BaseRepresentation
bin1011010011010010000111…
…1110111000101111001100
31121222220110001212022022001
42310310201332320233030
53112041231043131110
642232215014402044
72421512434502311
oct264644176705714
947886401768261
1012425910520780
113a60887600a39
121488284360324
136c19b20a2713
1430d5bb022d08
1516835e3e563a
hexb4d21fb8bcc

12425910520780 has 24 divisors (see below), whose sum is σ = 26100905024880. Its totient is φ = 4969127459520.

The previous prime is 12425910520729. The next prime is 12425910520783. The reversal of 12425910520780 is 8702501952421.

It is a self number, because there is not a number n which added to its sum of digits gives 12425910520780.

It is not an unprimeable number, because it can be changed into a prime (12425910520783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77214411 + ... + 77375170.

It is an arithmetic number, because the mean of its divisors is an integer number (1087537709370).

Almost surely, 212425910520780 is an apocalyptic number.

12425910520780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12425910520780 is an abundant number, since it is smaller than the sum of its proper divisors (13674994504100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12425910520780 is a wasteful number, since it uses less digits than its factorization.

12425910520780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154593609 (or 154593607 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 12425910520780 in words is "twelve trillion, four hundred twenty-five billion, nine hundred ten million, five hundred twenty thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 4019 8038 16076 20095 40190 80380 154589581 309179162 618358324 772947905 1545895810 3091791620 621295526039 1242591052078 2485182104156 3106477630195 6212955260390 12425910520780