125561612 has 12 divisors (see below), whose sum is σ = 239708616. Its totient is φ = 57073440.

The previous prime is 125561599. The next prime is 125561621. The reversal of 125561612 is 216165521.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 1426793 + ... + 1426880.

It is an arithmetic number, because the mean of its divisors is an integer number (19975718).

Almost surely, 2^125561612 is an apocalyptic number.

It is an amenable number.

125561612 is a deficient number, since it is larger than the sum of its proper divisors (114147004).

125561612 is a wasteful number, since it uses less digits than its factorization.

125561612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853688 (or 2853686 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 125561612 is about 11205.4277919230. The cubic root of 125561612 is about 500.7476973400.

The spelling of 125561612 in words is "one hundred twenty-five million, five hundred sixty-one thousand, six hundred twelve".