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25054060668 = 22371319672269
BaseRepresentation
bin10111010101010101…
…101010000001111100
32101200001122011002220
4113111111222001330
5402302314420133
615302031245340
71544602000440
oct272525520174
971601564086
1025054060668
11a69740066a
124a32679850
1324937b3c90
1412d961a820
159b98005b3
hex5d556a07c

25054060668 has 288 divisors, whose sum is σ = 77170060800. Its totient is φ = 6143537664.

The previous prime is 25054060651. The next prime is 25054060739. The reversal of 25054060668 is 86606045052.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 93137638 + ... + 93137906.

It is an arithmetic number, because the mean of its divisors is an integer number (267951600).

Almost surely, 225054060668 is an apocalyptic number.

25054060668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25054060668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38585030400).

25054060668 is an abundant number, since it is smaller than the sum of its proper divisors (52116000132).

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

25054060668 is a wasteful number, since it uses less digits than its factorization.

25054060668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 25054060668 in words is "twenty-five billion, fifty-four million, sixty thousand, six hundred sixty-eight".