125504531 has 2 divisors, whose sum is σ = 125504532. Its totient is φ = 125504530.

The previous prime is 125504521. The next prime is 125504551. The reversal of 125504531 is 135405521.

It is a weak prime.

It is an emirp because it is prime and its reverse (135405521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125504531 is a prime.

It is a super-2 number, since 2×125504531² = 31502774603059922, 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 125504531.

It is not a weakly prime, because it can be changed into another prime (125504521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62752265 + 62752266.

It is an arithmetic number, because the mean of its divisors is an integer number (62752266).

Almost surely, 2^125504531 is an apocalyptic number.

125504531 is a deficient number, since it is larger than the sum of its proper divisors (1).

125504531 is an equidigital number, since it uses as much as digits as its factorization.

125504531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 125504531 is about 11202.8804778057. The cubic root of 125504531 is about 500.6718049519.

The spelling of 125504531 in words is "one hundred twenty-five million, five hundred four thousand, five hundred thirty-one".