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780229452925 = 5213337692
BaseRepresentation
bin10110101101010010100…
…11001010010001111101
32202120220112100212222101
423112221103022101331
5100240402214443200
61354233224545101
7110240545632046
oct13265123122175
92676815325871
10780229452925
1128099120509a
12107269322191
1358762c9c000
1429a9872b8cd
151546779c26a
hexb5a94ca47d

780229452925 has 36 divisors (see below), whose sum is σ = 1048349685180. Its totient is φ = 576016571520.

The previous prime is 780229452901. The next prime is 780229452929. The reversal of 780229452925 is 529254922087.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 18 ways, for example, as 779796729721 + 432723204 = 883061^2 + 20802^2 .

It is not a de Polignac number, because 780229452925 - 213 = 780229444733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780229452929) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 207010441 + ... + 207014209.

Almost surely, 2780229452925 is an apocalyptic number.

It is an amenable number.

780229452925 is a deficient number, since it is larger than the sum of its proper divisors (268120232255).

780229452925 is an frugal number, since it uses more digits than its factorization.

780229452925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 780229452925 in words is "seven hundred eighty billion, two hundred twenty-nine million, four hundred fifty-two thousand, nine hundred twenty-five".

Divisors: 1 5 13 25 65 169 325 845 2197 3769 4225 10985 18845 48997 54925 94225 244985 636961 1224925 3184805 8280493 14205361 15924025 41402465 71026805 184669693 207012325 355134025 923348465 2400706009 4616742325 12003530045 31209178117 60017650225 156045890585 780229452925