25207850040 has 64 divisors (see below), whose sum is σ = 78911539200. Its totient is φ = 6429827712.

The previous prime is 25207850039. The next prime is 25207850077. The reversal of 25207850040 is 4005870252.

It is a junction number, because it is equal to n+sod(n) for n = 25207849983 and 25207850010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4563880 + ... + 4569399.

It is an arithmetic number, because the mean of its divisors is an integer number (1232992800).

Almost surely, 2^25207850040 is an apocalyptic number.

25207850040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25207850040 is an abundant number, since it is smaller than the sum of its proper divisors (53703689160).

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

25207850040 is a wasteful number, since it uses less digits than its factorization.

25207850040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133316 (or 9133312 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The spelling of 25207850040 in words is "twenty-five billion, two hundred seven million, eight hundred fifty thousand, forty".