61601725125 has 80 divisors (see below), whose sum is σ = 119837532672. Its totient is φ = 31425688800.

The previous prime is 61601725117. The next prime is 61601725189. The reversal of 61601725125 is 52152710616.

61601725125 is a `hidden beast` number, since 6 + 1 + 601 + 7 + 25 + 1 + 25 = 666.

It is not a de Polignac number, because 61601725125 - 2³ = 61601725117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61601725125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 100612 + ... + 365138.

Almost surely, 2^61601725125 is an apocalyptic number.

It is an amenable number.

61601725125 is a deficient number, since it is larger than the sum of its proper divisors (58235807547).

61601725125 is a wasteful number, since it uses less digits than its factorization.

61601725125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264577 (or 264558 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 61601725125 in words is "sixty-one billion, six hundred one million, seven hundred twenty-five thousand, one hundred twenty-five".