125462521 has 2 divisors, whose sum is σ = 125462522. Its totient is φ = 125462520.

The previous prime is 125462509. The next prime is 125462569. The reversal of 125462521 is 125264521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124010496 + 1452025 = 11136^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 125462521 - 2⁵ = 125462489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125462521.

It is not a weakly prime, because it can be changed into another prime (125462021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62731260 + 62731261.

It is an arithmetic number, because the mean of its divisors is an integer number (62731261).

Almost surely, 2^125462521 is an apocalyptic number.

It is an amenable number.

125462521 is a deficient number, since it is larger than the sum of its proper divisors (1).

125462521 is an equidigital number, since it uses as much as digits as its factorization.

125462521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 125462521 is about 11201.0053566633. The cubic root of 125462521 is about 500.6159356018.

The spelling of 125462521 in words is "one hundred twenty-five million, four hundred sixty-two thousand, five hundred twenty-one".