125661726 has 16 divisors (see below), whose sum is σ = 279248400. Its totient is φ = 41887224.

The previous prime is 125661709. The next prime is 125661737. The reversal of 125661726 is 627166521.

It is a happy number.

125661726 is a `hidden beast` number, since 12 + 5 + 6 + 617 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1163481 + ... + 1163588.

It is an arithmetic number, because the mean of its divisors is an integer number (17453025).

Almost surely, 2^125661726 is an apocalyptic number.

125661726 is an abundant number, since it is smaller than the sum of its proper divisors (153586674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125661726 is a wasteful number, since it uses less digits than its factorization.

125661726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327080 (or 2327074 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 125661726 is about 11209.8941118995. The cubic root of 125661726 is about 500.8807489848.

The spelling of 125661726 in words is "one hundred twenty-five million, six hundred sixty-one thousand, seven hundred twenty-six".