11525061331 has 4 divisors (see below), whose sum is σ = 13171498672. Its totient is φ = 9878623992.

The previous prime is 11525061307. The next prime is 11525061343. The reversal of 11525061331 is 13316052511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11525061331 - 2¹⁹ = 11524537043 is a prime.

It is a super-2 number, since 2×11525061331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11525061331.

It is not an unprimeable number, because it can be changed into a prime (11525061631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823218660 + ... + 823218673.

It is an arithmetic number, because the mean of its divisors is an integer number (3292874668).

Almost surely, 2^11525061331 is an apocalyptic number.

11525061331 is a deficient number, since it is larger than the sum of its proper divisors (1646437341).

11525061331 is an equidigital number, since it uses as much as digits as its factorization.

11525061331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646437340.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 11525061331 in words is "eleven billion, five hundred twenty-five million, sixty-one thousand, three hundred thirty-one".