25897371740 has 24 divisors (see below), whose sum is σ = 54390477120. Its totient is φ = 10357806528.

The previous prime is 25897371739. The next prime is 25897371763. The reversal of 25897371740 is 4717379852.

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, 128141 + ... + 261179.

It is an arithmetic number, because the mean of its divisors is an integer number (2266269880).

Almost surely, 2^25897371740 is an apocalyptic number.

25897371740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25897371740 is an abundant number, since it is smaller than the sum of its proper divisors (28493105380).

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

25897371740 is a wasteful number, since it uses less digits than its factorization.

25897371740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142781 (or 142779 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 25897371740 in words is "twenty-five billion, eight hundred ninety-seven million, three hundred seventy-one thousand, seven hundred forty".