23111556725 has 6 divisors (see below), whose sum is σ = 28658330370. Its totient is φ = 18489245360.

The previous prime is 23111556701. The next prime is 23111556749. The reversal of 23111556725 is 52765511132.

It is an interprime number because it is at equal distance from previous prime (23111556701) and next prime (23111556749).

It can be written as a sum of positive squares in 3 ways, for example, as 3543463729 + 19568092996 = 59527^2 + 139886^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23111556725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462231110 + ... + 462231159.

It is an arithmetic number, because the mean of its divisors is an integer number (4776388395).

Almost surely, 2^23111556725 is an apocalyptic number.

23111556725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23111556725 is a deficient number, since it is larger than the sum of its proper divisors (5546773645).

23111556725 is an equidigital number, since it uses as much as digits as its factorization.

23111556725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924462279 (or 924462274 counting only the distinct ones).

The product of its digits is 63000, while the sum is 38.

The spelling of 23111556725 in words is "twenty-three billion, one hundred eleven million, five hundred fifty-six thousand, seven hundred twenty-five".