25532656580400 has 60 divisors (see below), whose sum is σ = 81789609916392. Its totient is φ = 6808708421120.

The previous prime is 25532656580351. The next prime is 25532656580429. The reversal of 25532656580400 is 408565623552.

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10638605709 + ... + 10638608108.

Almost surely, 2^{25532656580400} is an apocalyptic number.

25532656580400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25532656580400 is an abundant number, since it is smaller than the sum of its proper divisors (56256953335992).

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

25532656580400 is a wasteful number, since it uses less digits than its factorization.

25532656580400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21277213838 (or 21277213827 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 51.

The spelling of 25532656580400 in words is "twenty-five trillion, five hundred thirty-two billion, six hundred fifty-six million, five hundred eighty thousand, four hundred".