125764669 has 2 divisors, whose sum is σ = 125764670. Its totient is φ = 125764668.

The previous prime is 125764663. The next prime is 125764673. The reversal of 125764669 is 966467521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115842169 + 9922500 = 10763^2 + 3150^2 .

It is a cyclic number.

It is not a de Polignac number, because 125764669 - 2²¹ = 123667517 is a prime.

It is a super-2 number, since 2×125764669² = 31633503937359122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125764663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62882334 + 62882335.

It is an arithmetic number, because the mean of its divisors is an integer number (62882335).

Almost surely, 2^125764669 is an apocalyptic number.

It is an amenable number.

125764669 is a deficient number, since it is larger than the sum of its proper divisors (1).

125764669 is an equidigital number, since it uses as much as digits as its factorization.

125764669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 125764669 is about 11214.4847853123. The cubic root of 125764669 is about 501.0174867038.

The spelling of 125764669 in words is "one hundred twenty-five million, seven hundred sixty-four thousand, six hundred sixty-nine".