125491077 has 12 divisors (see below), whose sum is σ = 181481664. Its totient is φ = 83560680.

The previous prime is 125491073. The next prime is 125491097. The reversal of 125491077 is 770194521.

It is a happy number.

125491077 is a `hidden beast` number, since 1 + 2 + 549 + 107 + 7 = 666.

It is not a de Polignac number, because 125491077 - 2² = 125491073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125491073) 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, 52 + ... + 15842.

It is an arithmetic number, because the mean of its divisors is an integer number (15123472).

Almost surely, 2^125491077 is an apocalyptic number.

It is an amenable number.

125491077 is a deficient number, since it is larger than the sum of its proper divisors (55990587).

125491077 is a wasteful number, since it uses less digits than its factorization.

125491077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16680 (or 16677 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 125491077 is about 11202.2799911447. The cubic root of 125491077 is about 500.6539137541.

The spelling of 125491077 in words is "one hundred twenty-five million, four hundred ninety-one thousand, seventy-seven".