11115625631 has 16 divisors (see below), whose sum is σ = 12587194368. Its totient is φ = 9727951200.

The previous prime is 11115625589. The next prime is 11115625643. The reversal of 11115625631 is 13652651111.

It is not a de Polignac number, because 11115625631 - 2⁶ = 11115625567 is a prime.

It is a super-2 number, since 2×11115625631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115625681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144695 + ... + 207768.

It is an arithmetic number, because the mean of its divisors is an integer number (786699648).

Almost surely, 2^11115625631 is an apocalyptic number.

11115625631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11115625631 is a deficient number, since it is larger than the sum of its proper divisors (1471568737).

11115625631 is a wasteful number, since it uses less digits than its factorization.

11115625631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352582.

The product of its digits is 5400, while the sum is 32.

The spelling of 11115625631 in words is "eleven billion, one hundred fifteen million, six hundred twenty-five thousand, six hundred thirty-one".