231553251541125 has 64 divisors (see below), whose sum is σ = 428175354147840. Its totient is φ = 123478013592000.

The previous prime is 231553251541109. The next prime is 231553251541147. The reversal of 231553251541125 is 521145152355132.

231553251541125 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 5 + 3 + 2 + 515 + 4 + 1 + 125 = 666.

It is not a de Polignac number, because 231553251541125 - 2⁴ = 231553251541109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19725055 + ... + 29192195.

It is an arithmetic number, because the mean of its divisors is an integer number (6690239908560).

Almost surely, 2^{231553251541125} is an apocalyptic number.

231553251541125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231553251541125 is a deficient number, since it is larger than the sum of its proper divisors (196622102606715).

231553251541125 is an equidigital number, since it uses as much as digits as its factorization.

231553251541125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474412 (or 9474396 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The spelling of 231553251541125 in words is "two hundred thirty-one trillion, five hundred fifty-three billion, two hundred fifty-one million, five hundred forty-one thousand, one hundred twenty-five".