125524981 has 2 divisors, whose sum is σ = 125524982. Its totient is φ = 125524980.

The previous prime is 125524943. The next prime is 125525027. The reversal of 125524981 is 189425521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 25704900 = 9991^2 + 5070^2 .

It is a cyclic number.

It is not a de Polignac number, because 125524981 - 2⁷ = 125524853 is a prime.

It is a super-2 number, since 2×125524981² = 31513041710100722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125524981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125524081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62762490 + 62762491.

It is an arithmetic number, because the mean of its divisors is an integer number (62762491).

Almost surely, 2^125524981 is an apocalyptic number.

It is an amenable number.

125524981 is a deficient number, since it is larger than the sum of its proper divisors (1).

125524981 is an equidigital number, since it uses as much as digits as its factorization.

125524981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 125524981 is about 11203.7931523212. The cubic root of 125524981 is about 500.6989970176.

The spelling of 125524981 in words is "one hundred twenty-five million, five hundred twenty-four thousand, nine hundred eighty-one".