10644645525 has 48 divisors (see below), whose sum is σ = 18382930560. Its totient is φ = 5424812800.

The previous prime is 10644645509. The next prime is 10644645559. The reversal of 10644645525 is 52554644601.

It is not a de Polignac number, because 10644645525 - 2⁴ = 10644645509 is a prime.

It is a super-2 number, since 2×10644645525² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2117515 + ... + 2122535.

It is an arithmetic number, because the mean of its divisors is an integer number (382977720).

Almost surely, 2^10644645525 is an apocalyptic number.

10644645525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10644645525 is a deficient number, since it is larger than the sum of its proper divisors (7738285035).

10644645525 is a wasteful number, since it uses less digits than its factorization.

10644645525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 10644645525 in words is "ten billion, six hundred forty-four million, six hundred forty-five thousand, five hundred twenty-five".