125241142521 has 16 divisors (see below), whose sum is σ = 182422333440. Its totient is φ = 75798139920.

The previous prime is 125241142517. The next prime is 125241142547.

125241142521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125241142521 - 2² = 125241142517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125241142591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2615485 + ... + 2662938.

It is an arithmetic number, because the mean of its divisors is an integer number (11401395840).

Almost surely, 2^125241142521 is an apocalyptic number.

125241142521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125241142521 is a deficient number, since it is larger than the sum of its proper divisors (57181190919).

125241142521 is a wasteful number, since it uses less digits than its factorization.

125241142521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279156.

The product of its digits is 6400, while the sum is 30.

It can be divided in two parts, 125241 and 142521, that added together give a palindrome (267762).

The spelling of 125241142521 in words is "one hundred twenty-five billion, two hundred forty-one million, one hundred forty-two thousand, five hundred twenty-one".