23143651625 has 32 divisors (see below), whose sum is σ = 29391931296. Its totient is φ = 18189600000.

The previous prime is 23143651621. The next prime is 23143651667. The reversal of 23143651625 is 52615634132.

It can be written as a sum of positive squares in 16 ways, for example, as 22378963216 + 764688409 = 149596^2 + 27653^2 .

It is not a de Polignac number, because 23143651625 - 2² = 23143651621 is a prime.

It is a super-2 number, since 2×23143651625² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23143651621) 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, 9918959 + ... + 9921291.

It is an arithmetic number, because the mean of its divisors is an integer number (918497853).

Almost surely, 2^23143651625 is an apocalyptic number.

23143651625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23143651625 is a deficient number, since it is larger than the sum of its proper divisors (6248279671).

23143651625 is a wasteful number, since it uses less digits than its factorization.

23143651625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710 (or 3700 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The spelling of 23143651625 in words is "twenty-three billion, one hundred forty-three million, six hundred fifty-one thousand, six hundred twenty-five".