125325523521 has 12 divisors (see below), whose sum is σ = 197482643280. Its totient is φ = 75954862680.

The previous prime is 125325523517. The next prime is 125325523529.

125325523521 is a `hidden beast` number, since 1 + 2 + 53 + 2 + 552 + 3 + 52 + 1 = 666.

125325523521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125325523521 - 2² = 125325523517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125325523529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632957091 + ... + 632957288.

It is an arithmetic number, because the mean of its divisors is an integer number (16456886940).

Almost surely, 2^125325523521 is an apocalyptic number.

125325523521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125325523521 is a deficient number, since it is larger than the sum of its proper divisors (72157119759).

125325523521 is a wasteful number, since it uses less digits than its factorization.

125325523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265914396 (or 1265914393 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

It can be divided in two parts, 125325 and 523521, that added together give a palindrome (648846).

The spelling of 125325523521 in words is "one hundred twenty-five billion, three hundred twenty-five million, five hundred twenty-three thousand, five hundred twenty-one".