125881657 has 8 divisors (see below), whose sum is σ = 137583072. Its totient is φ = 114223200.

The previous prime is 125881649. The next prime is 125881673. The reversal of 125881657 is 756188521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125881657 - 2³ = 125881649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125881627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4444 + ... + 16477.

It is an arithmetic number, because the mean of its divisors is an integer number (17197884).

Almost surely, 2^125881657 is an apocalyptic number.

It is an amenable number.

125881657 is a deficient number, since it is larger than the sum of its proper divisors (11701415).

125881657 is a wasteful number, since it uses less digits than its factorization.

125881657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21479.

The product of its digits is 134400, while the sum is 43.

The square root of 125881657 is about 11219.6995057800. The cubic root of 125881657 is about 501.1727896448.

The spelling of 125881657 in words is "one hundred twenty-five million, eight hundred eighty-one thousand, six hundred fifty-seven".