11725322631 has 32 divisors (see below), whose sum is σ = 17216770560. Its totient is φ = 7039180800.

The previous prime is 11725322629. The next prime is 11725322663. The reversal of 11725322631 is 13622352711.

It is not a de Polignac number, because 11725322631 - 2¹ = 11725322629 is a prime.

It is a super-2 number, since 2×11725322631² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 11725322592 and 11725322601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11725322831) 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, 1531110 + ... + 1538748.

It is an arithmetic number, because the mean of its divisors is an integer number (538024080).

Almost surely, 2^11725322631 is an apocalyptic number.

11725322631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11725322631 is a deficient number, since it is larger than the sum of its proper divisors (5491447929).

11725322631 is a wasteful number, since it uses less digits than its factorization.

11725322631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8087.

The product of its digits is 15120, while the sum is 33.

The spelling of 11725322631 in words is "eleven billion, seven hundred twenty-five million, three hundred twenty-two thousand, six hundred thirty-one".