11525501513 has 8 divisors (see below), whose sum is σ = 11939273640. Its totient is φ = 11118046720.

The previous prime is 11525501483. The next prime is 11525501521. The reversal of 11525501513 is 31510552511.

It can be written as a sum of positive squares in 4 ways, for example, as 184742464 + 11340759049 = 13592^2 + 106493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11525501513 - 2²² = 11521307209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11525501573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575620 + ... + 1582917.

It is an arithmetic number, because the mean of its divisors is an integer number (1492409205).

Almost surely, 2^11525501513 is an apocalyptic number.

It is an amenable number.

11525501513 is a deficient number, since it is larger than the sum of its proper divisors (413772127).

11525501513 is an equidigital number, since it uses as much as digits as its factorization.

11525501513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158667.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 11525501513 in words is "eleven billion, five hundred twenty-five million, five hundred one thousand, five hundred thirteen".