25056599912640 has 504 divisors, whose sum is σ = 91592993110320. Its totient is φ = 6285909590016.

The previous prime is 25056599912629. The next prime is 25056599912693. The reversal of 25056599912640 is 4621999565052.

25056599912640 is a `hidden beast` number, since 2 + 5 + 0 + 565 + 9 + 9 + 9 + 1 + 2 + 64 + 0 = 666.

It is a super-2 number, since 2×25056599912640² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2366280466 + ... + 2366291054.

Almost surely, 2^{25056599912640} is an apocalyptic number.

25056599912640 is a gapful number since it is divisible by the number (20) 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 25056599912640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45796496555160).

25056599912640 is an abundant number, since it is smaller than the sum of its proper divisors (66536393197680).

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

25056599912640 is a wasteful number, since it uses less digits than its factorization.

25056599912640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13489 (or 13459 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 63.

The spelling of 25056599912640 in words is "twenty-five trillion, fifty-six billion, five hundred ninety-nine million, nine hundred twelve thousand, six hundred forty".