25278852625 has 32 divisors (see below), whose sum is σ = 34178586624. Its totient is φ = 18555480000.

The previous prime is 25278852619. The next prime is 25278852649. The reversal of 25278852625 is 52625887252.

It is not a de Polignac number, because 25278852625 - 2¹¹ = 25278850577 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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, 224800 + ... + 317950.

It is an arithmetic number, because the mean of its divisors is an integer number (1068080832).

Almost surely, 2^25278852625 is an apocalyptic number.

25278852625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25278852625 is a deficient number, since it is larger than the sum of its proper divisors (8899733999).

25278852625 is a wasteful number, since it uses less digits than its factorization.

25278852625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93346 (or 93336 counting only the distinct ones).

The product of its digits is 5376000, while the sum is 52.

The spelling of 25278852625 in words is "twenty-five billion, two hundred seventy-eight million, eight hundred fifty-two thousand, six hundred twenty-five".