25525552527 has 12 divisors (see below), whose sum is σ = 38810781880. Its totient is φ = 16121401488.

The previous prime is 25525552523. The next prime is 25525552537. The reversal of 25525552527 is 72525552552.

25525552527 is a `hidden beast` number, since 2 + 5 + 52 + 55 + 525 + 27 = 666.

It is not a de Polignac number, because 25525552527 - 2² = 25525552523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525552523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74635948 + ... + 74636289.

Almost surely, 2^25525552527 is an apocalyptic number.

25525552527 is a deficient number, since it is larger than the sum of its proper divisors (13285229353).

25525552527 is a wasteful number, since it uses less digits than its factorization.

25525552527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149272262 (or 149272259 counting only the distinct ones).

The product of its digits is 1750000, while the sum is 45.

The spelling of 25525552527 in words is "twenty-five billion, five hundred twenty-five million, five hundred fifty-two thousand, five hundred twenty-seven".