125623525513 has 2 divisors, whose sum is σ = 125623525514. Its totient is φ = 125623525512.

The previous prime is 125623525493. The next prime is 125623525529. The reversal of 125623525513 is 315525326521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123856836489 + 1766689024 = 351933^2 + 42032^2 .

It is an emirp because it is prime and its reverse (315525326521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125623525513 - 2²⁵ = 125589971081 is a prime.

It is not a weakly prime, because it can be changed into another prime (125623522513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62811762756 + 62811762757.

It is an arithmetic number, because the mean of its divisors is an integer number (62811762757).

Almost surely, 2^125623525513 is an apocalyptic number.

It is an amenable number.

125623525513 is a deficient number, since it is larger than the sum of its proper divisors (1).

125623525513 is an equidigital number, since it uses as much as digits as its factorization.

125623525513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 40.

The spelling of 125623525513 in words is "one hundred twenty-five billion, six hundred twenty-three million, five hundred twenty-five thousand, five hundred thirteen".