25102516225 has 12 divisors (see below), whose sum is σ = 31145239216. Its totient is φ = 20070323280.

The previous prime is 25102516189. The next prime is 25102516253. The reversal of 25102516225 is 52261520152.

It is a happy number.

It is not a de Polignac number, because 25102516225 - 2¹⁵ = 25102483457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248307 + ... + 334456.

Almost surely, 2^25102516225 is an apocalyptic number.

25102516225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25102516225 is a deficient number, since it is larger than the sum of its proper divisors (6042722991).

25102516225 is a wasteful number, since it uses less digits than its factorization.

25102516225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584496 (or 584491 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 25102516225 in words is "twenty-five billion, one hundred two million, five hundred sixteen thousand, two hundred twenty-five".