25431916475 has 24 divisors (see below), whose sum is σ = 36256512768. Its totient is φ = 17334583200.

The previous prime is 25431916463. The next prime is 25431916501. The reversal of 25431916475 is 57461913452.

It is a happy number.

It is not a de Polignac number, because 25431916475 - 2¹⁸ = 25431654331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405881 + ... + 464330.

It is an arithmetic number, because the mean of its divisors is an integer number (1510688032).

Almost surely, 2^25431916475 is an apocalyptic number.

25431916475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25431916475 is a deficient number, since it is larger than the sum of its proper divisors (10824596293).

25431916475 is a wasteful number, since it uses less digits than its factorization.

25431916475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870395 (or 870390 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The spelling of 25431916475 in words is "twenty-five billion, four hundred thirty-one million, nine hundred sixteen thousand, four hundred seventy-five".