11525582578 has 64 divisors (see below), whose sum is σ = 18986088960. Its totient is φ = 5230697472.

The previous prime is 11525582461. The next prime is 11525582587. The reversal of 11525582578 is 87528552511.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23666251 + ... + 23666737.

It is an arithmetic number, because the mean of its divisors is an integer number (296657640).

Almost surely, 2^11525582578 is an apocalyptic number.

11525582578 is a deficient number, since it is larger than the sum of its proper divisors (7460506382).

11525582578 is a wasteful number, since it uses less digits than its factorization.

11525582578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811.

The product of its digits is 1120000, while the sum is 49.

The spelling of 11525582578 in words is "eleven billion, five hundred twenty-five million, five hundred eighty-two thousand, five hundred seventy-eight".