125669257 has 12 divisors (see below), whose sum is σ = 148450048. Its totient is φ = 104104800.

The previous prime is 125669231. The next prime is 125669293. The reversal of 125669257 is 752966521.

It is not a de Polignac number, because 125669257 - 2¹¹ = 125667209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125669227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164757 + ... + 165517.

Almost surely, 2^125669257 is an apocalyptic number.

It is an amenable number.

125669257 is a deficient number, since it is larger than the sum of its proper divisors (22780791).

125669257 is an frugal number, since it uses more digits than its factorization.

125669257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 799 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 125669257 is about 11210.2300154814. The cubic root of 125669257 is about 500.8907548360.

The spelling of 125669257 in words is "one hundred twenty-five million, six hundred sixty-nine thousand, two hundred fifty-seven".