231447241725 has 192 divisors, whose sum is σ = 466213017600. Its totient is φ = 98966568960.

The previous prime is 231447241723. The next prime is 231447241733. The reversal of 231447241725 is 527142744132.

It is not a de Polignac number, because 231447241725 - 2¹ = 231447241723 is a prime.

It is a super-2 number, since 2×231447241725² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231447241723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 351209446 + ... + 351210104.

It is an arithmetic number, because the mean of its divisors is an integer number (2428192800).

Almost surely, 2^231447241725 is an apocalyptic number.

231447241725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231447241725 is an abundant number, since it is smaller than the sum of its proper divisors (234765775875).

231447241725 is a wasteful number, since it uses less digits than its factorization.

231447241725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1087 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

Adding to 231447241725 its reverse (527142744132), we get a palindrome (758589985857).

The spelling of 231447241725 in words is "two hundred thirty-one billion, four hundred forty-seven million, two hundred forty-one thousand, seven hundred twenty-five".