125425424524521 has 48 divisors (see below), whose sum is σ = 183969937170432. Its totient is φ = 75953039833440.

The previous prime is 125425424524501. The next prime is 125425424524523.

125425424524521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125425424524521 - 2¹⁵ = 125425424491753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125425424524523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4980546696 + ... + 4980571878.

It is an arithmetic number, because the mean of its divisors is an integer number (3832707024384).

Almost surely, 2^{125425424524521} is an apocalyptic number.

125425424524521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125425424524521 is a deficient number, since it is larger than the sum of its proper divisors (58544512645911).

125425424524521 is a wasteful number, since it uses less digits than its factorization.

125425424524521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35922 (or 35911 counting only the distinct ones).

The product of its digits is 5120000, while the sum is 48.

The spelling of 125425424524521 in words is "one hundred twenty-five trillion, four hundred twenty-five billion, four hundred twenty-four million, five hundred twenty-four thousand, five hundred twenty-one".