125409953 has 2 divisors, whose sum is σ = 125409954. Its totient is φ = 125409952.

The previous prime is 125409941. The next prime is 125409971. The reversal of 125409953 is 359904521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125059489 + 350464 = 11183^2 + 592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125409953 is a prime.

It is a super-2 number, since 2×125409953² = 31455312622924418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125409923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62704976 + 62704977.

It is an arithmetic number, because the mean of its divisors is an integer number (62704977).

Almost surely, 2^125409953 is an apocalyptic number.

It is an amenable number.

125409953 is a deficient number, since it is larger than the sum of its proper divisors (1).

125409953 is an equidigital number, since it uses as much as digits as its factorization.

125409953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 125409953 is about 11198.6585357354. The cubic root of 125409953 is about 500.5460075345.

The spelling of 125409953 in words is "one hundred twenty-five million, four hundred nine thousand, nine hundred fifty-three".