5256666525 has 72 divisors (see below), whose sum is σ = 9630272512. Its totient is φ = 2528064000.

The previous prime is 5256666461. The next prime is 5256666581.

5256666525 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5256666525 - 2⁶ = 5256666461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1150245 + ... + 1154805.

Almost surely, 2^5256666525 is an apocalyptic number.

5256666525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5256666525 is a deficient number, since it is larger than the sum of its proper divisors (4373605987).

5256666525 is a wasteful number, since it uses less digits than its factorization.

5256666525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723 (or 4707 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The square root of 5256666525 is about 72502.8725293005. The cubic root of 5256666525 is about 1738.7486626644.

The spelling of 5256666525 in words is "five billion, two hundred fifty-six million, six hundred sixty-six thousand, five hundred twenty-five".