25625625392640 has 320 divisors, whose sum is σ = 100826982660096. Its totient is φ = 5406725210112.

The previous prime is 25625625392629. The next prime is 25625625392693. The reversal of 25625625392640 is 4629352652652.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17634472 + ... + 19032231.

Almost surely, 2^{25625625392640} is an apocalyptic number.

25625625392640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25625625392640 is an abundant number, since it is smaller than the sum of its proper divisors (75201357267456).

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

25625625392640 is a wasteful number, since it uses less digits than its factorization.

25625625392640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36666749 (or 36666733 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 57.

The spelling of 25625625392640 in words is "twenty-five trillion, six hundred twenty-five billion, six hundred twenty-five million, three hundred ninety-two thousand, six hundred forty".