125374409 has 2 divisors, whose sum is σ = 125374410. Its totient is φ = 125374408.

The previous prime is 125374397. The next prime is 125374421. The reversal of 125374409 is 904473521.

It is a balanced prime because it is at equal distance from previous prime (125374397) and next prime (125374421).

It can be written as a sum of positive squares in only one way, i.e., 125372809 + 1600 = 11197^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 125374409 - 2⁸ = 125374153 is a prime.

It is not a weakly prime, because it can be changed into another prime (125374429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62687204 + 62687205.

It is an arithmetic number, because the mean of its divisors is an integer number (62687205).

Almost surely, 2^125374409 is an apocalyptic number.

It is an amenable number.

125374409 is a deficient number, since it is larger than the sum of its proper divisors (1).

125374409 is an equidigital number, since it uses as much as digits as its factorization.

125374409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 125374409 is about 11197.0714474813. The cubic root of 125374409 is about 500.4987144025.

The spelling of 125374409 in words is "one hundred twenty-five million, three hundred seventy-four thousand, four hundred nine".