125937424621 has 2 divisors, whose sum is σ = 125937424622. Its totient is φ = 125937424620.

The previous prime is 125937424511. The next prime is 125937424649. The reversal of 125937424621 is 126424739521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121235579721 + 4701844900 = 348189^2 + 68570^2 .

It is a cyclic number.

It is not a de Polignac number, because 125937424621 - 2²⁵ = 125903870189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125937424661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62968712310 + 62968712311.

It is an arithmetic number, because the mean of its divisors is an integer number (62968712311).

Almost surely, 2^125937424621 is an apocalyptic number.

It is an amenable number.

125937424621 is a deficient number, since it is larger than the sum of its proper divisors (1).

125937424621 is an equidigital number, since it uses as much as digits as its factorization.

125937424621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 125937424621 in words is "one hundred twenty-five billion, nine hundred thirty-seven million, four hundred twenty-four thousand, six hundred twenty-one".