25607225440 has 48 divisors (see below), whose sum is σ = 60556824720. Its totient is φ = 10232773120.

The previous prime is 25607225431. The next prime is 25607225551. The reversal of 25607225440 is 4452270652.

It is a self number, because there is not a number n which added to its sum of digits gives 25607225440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84510 + ... + 241570.

It is an arithmetic number, because the mean of its divisors is an integer number (1261600515).

Almost surely, 2^25607225440 is an apocalyptic number.

25607225440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25607225440 is an abundant number, since it is smaller than the sum of its proper divisors (34949599280).

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

25607225440 is a wasteful number, since it uses less digits than its factorization.

25607225440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158095 (or 158087 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 25607225440 in words is "twenty-five billion, six hundred seven million, two hundred twenty-five thousand, four hundred forty".