25154162540 has 48 divisors (see below), whose sum is σ = 60233416992. Its totient is φ = 8741354496.

The previous prime is 25154162521. The next prime is 25154162563. The reversal of 25154162540 is 4526145152.

It is a self number, because there is not a number n which added to its sum of digits gives 25154162540.

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, 2841074 + ... + 2849913.

It is an arithmetic number, because the mean of its divisors is an integer number (1254862854).

Almost surely, 2^25154162540 is an apocalyptic number.

25154162540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25154162540 is an abundant number, since it is smaller than the sum of its proper divisors (35079254452).

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

25154162540 is a wasteful number, since it uses less digits than its factorization.

25154162540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691026 (or 5691024 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 25154162540 in words is "twenty-five billion, one hundred fifty-four million, one hundred sixty-two thousand, five hundred forty".