25620401957580 has 36 divisors (see below), whose sum is σ = 77715219271872. Its totient is φ = 6832107188640.

The previous prime is 25620401957569. The next prime is 25620401957611. The reversal of 25620401957580 is 8575910402652.

25620401957580 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 0 + 4 + 0 + 1 + 9 + 57 + 580 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25620401957580² (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 11 ways as a sum of consecutive naturals, for example, 71167783036 + ... + 71167783395.

Almost surely, 2^{25620401957580} is an apocalyptic number.

25620401957580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25620401957580 is an abundant number, since it is smaller than the sum of its proper divisors (52094817314292).

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

25620401957580 is a wasteful number, since it uses less digits than its factorization.

25620401957580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142335566446 (or 142335566441 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 25620401957580 in words is "twenty-five trillion, six hundred twenty billion, four hundred one million, nine hundred fifty-seven thousand, five hundred eighty".