125242646242521 has 64 divisors (see below), whose sum is σ = 180753935694336. Its totient is φ = 76927656960000.

The previous prime is 125242646242507. The next prime is 125242646242541.

125242646242521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125242646242521 - 2⁵ = 125242646242489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125242646242541) 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 63 ways as a sum of consecutive naturals, for example, 2552978025 + ... + 2553027081.

It is an arithmetic number, because the mean of its divisors is an integer number (2824280245224).

Almost surely, 2^{125242646242521} is an apocalyptic number.

It is an amenable number.

125242646242521 is a deficient number, since it is larger than the sum of its proper divisors (55511289451815).

125242646242521 is a wasteful number, since it uses less digits than its factorization.

125242646242521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59122.

The product of its digits is 3686400, while the sum is 48.

The spelling of 125242646242521 in words is "one hundred twenty-five trillion, two hundred forty-two billion, six hundred forty-six million, two hundred forty-two thousand, five hundred twenty-one".