25112551494 has 64 divisors (see below), whose sum is σ = 51476705280. Its totient is φ = 8164789920.

The previous prime is 25112551489. The next prime is 25112551511. The reversal of 25112551494 is 49415521152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33798487 + ... + 33799229.

It is an arithmetic number, because the mean of its divisors is an integer number (804323520).

Almost surely, 2^25112551494 is an apocalyptic number.

25112551494 is an abundant number, since it is smaller than the sum of its proper divisors (26364153786).

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

25112551494 is a wasteful number, since it uses less digits than its factorization.

25112551494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425.

The product of its digits is 72000, while the sum is 39.

The spelling of 25112551494 in words is "twenty-five billion, one hundred twelve million, five hundred fifty-one thousand, four hundred ninety-four".