23152121125 has 32 divisors (see below), whose sum is σ = 33342266880. Its totient is φ = 15721545600.

The previous prime is 23152121107. The next prime is 23152121137. The reversal of 23152121125 is 52112125132.

It is a happy number.

It is not a de Polignac number, because 23152121125 - 2⁵ = 23152121093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 23152121125.

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 31 ways as a sum of consecutive naturals, for example, 38320 + ... + 218569.

It is an arithmetic number, because the mean of its divisors is an integer number (1041945840).

Almost surely, 2^23152121125 is an apocalyptic number.

23152121125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23152121125 is a deficient number, since it is larger than the sum of its proper divisors (10190145755).

23152121125 is a wasteful number, since it uses less digits than its factorization.

23152121125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257014 (or 257004 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

Adding to 23152121125 its reverse (52112125132), we get a palindrome (75264246257).

The spelling of 23152121125 in words is "twenty-three billion, one hundred fifty-two million, one hundred twenty-one thousand, one hundred twenty-five".