11525521613465 has 32 divisors (see below), whose sum is σ = 13943869046016. Its totient is φ = 9145170397440.

The previous prime is 11525521613449. The next prime is 11525521613467. The reversal of 11525521613465 is 56431612552511.

It is not a de Polignac number, because 11525521613465 - 2⁴ = 11525521613449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11525521613467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031545619 + ... + 1031556791.

It is an arithmetic number, because the mean of its divisors is an integer number (435745907688).

Almost surely, 2^{11525521613465} is an apocalyptic number.

It is an amenable number.

11525521613465 is a deficient number, since it is larger than the sum of its proper divisors (2418347432551).

11525521613465 is a wasteful number, since it uses less digits than its factorization.

11525521613465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13809.

The product of its digits is 1080000, while the sum is 47.

The spelling of 11525521613465 in words is "eleven trillion, five hundred twenty-five billion, five hundred twenty-one million, six hundred thirteen thousand, four hundred sixty-five".