125249157 has 18 divisors (see below), whose sum is σ = 198859206. Its totient is φ = 75907920.

The previous prime is 125249143. The next prime is 125249167. The reversal of 125249157 is 751942521.

It can be written as a sum of positive squares in only one way, i.e., 123676641 + 1572516 = 11121^2 + 1254^2 .

It is not a de Polignac number, because 125249157 - 2⁷ = 125249029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125249167) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56418 + ... + 58595.

Almost surely, 2^125249157 is an apocalyptic number.

It is an amenable number.

125249157 is a deficient number, since it is larger than the sum of its proper divisors (73610049).

125249157 is a wasteful number, since it uses less digits than its factorization.

125249157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115041 (or 115027 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 125249157 is about 11191.4769802739. The cubic root of 125249157 is about 500.3319888514.

The spelling of 125249157 in words is "one hundred twenty-five million, two hundred forty-nine thousand, one hundred fifty-seven".