125725977 has 12 divisors (see below), whose sum is σ = 195573924. Its totient is φ = 77369760.

The previous prime is 125725973. The next prime is 125726053. The reversal of 125725977 is 779527521.

125725977 is a `hidden beast` number, since 1 + 2 + 57 + 2 + 597 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9603801 + 116122176 = 3099^2 + 10776^2 .

It is not a de Polignac number, because 125725977 - 2² = 125725973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125725973) 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, 537174 + ... + 537407.

It is an arithmetic number, because the mean of its divisors is an integer number (16297827).

Almost surely, 2^125725977 is an apocalyptic number.

It is an amenable number.

125725977 is a deficient number, since it is larger than the sum of its proper divisors (69847947).

125725977 is a wasteful number, since it uses less digits than its factorization.

125725977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074600 (or 1074597 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 125725977 is about 11212.7595622130. The cubic root of 125725977 is about 500.9661014271.

The spelling of 125725977 in words is "one hundred twenty-five million, seven hundred twenty-five thousand, nine hundred seventy-seven".