125320034621 has 2 divisors, whose sum is σ = 125320034622. Its totient is φ = 125320034620.

The previous prime is 125320034603. The next prime is 125320034627. The reversal of 125320034621 is 126430023521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124799692900 + 520341721 = 353270^2 + 22811^2 .

It is a cyclic number.

It is not a de Polignac number, because 125320034621 - 2²⁶ = 125252925757 is a prime.

It is a super-2 number, since 2×125320034621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125320034627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62660017310 + 62660017311.

It is an arithmetic number, because the mean of its divisors is an integer number (62660017311).

Almost surely, 2^125320034621 is an apocalyptic number.

It is an amenable number.

125320034621 is a deficient number, since it is larger than the sum of its proper divisors (1).

125320034621 is an equidigital number, since it uses as much as digits as its factorization.

125320034621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

It can be divided in two parts, 1253200 and 34621, that added together give a palindrome (1287821).

The spelling of 125320034621 in words is "one hundred twenty-five billion, three hundred twenty million, thirty-four thousand, six hundred twenty-one".