125774609 has 2 divisors, whose sum is σ = 125774610. Its totient is φ = 125774608.

The previous prime is 125774599. The next prime is 125774617. The reversal of 125774609 is 906477521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 52243984 = 8575^2 + 7228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125774609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125774659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62887304 + 62887305.

It is an arithmetic number, because the mean of its divisors is an integer number (62887305).

Almost surely, 2^125774609 is an apocalyptic number.

It is an amenable number.

125774609 is a deficient number, since it is larger than the sum of its proper divisors (1).

125774609 is an equidigital number, since it uses as much as digits as its factorization.

125774609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 125774609 is about 11214.9279534021. The cubic root of 125774609 is about 501.0306859132.

The spelling of 125774609 in words is "one hundred twenty-five million, seven hundred seventy-four thousand, six hundred nine".