61432520625 has 120 divisors (see below), whose sum is σ = 127855673088. Its totient is φ = 27832896000.

The previous prime is 61432520587. The next prime is 61432520627. The reversal of 61432520625 is 52602523416.

61432520625 is a `hidden beast` number, since 6 + 1 + 4 + 3 + 2 + 5 + 20 + 625 = 666.

It is not a de Polignac number, because 61432520625 - 2¹¹ = 61432518577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61432520625.

It is not an unprimeable number, because it can be changed into a prime (61432520627) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4442472 + ... + 4456278.

Almost surely, 2^61432520625 is an apocalyptic number.

It is an amenable number.

61432520625 is an abundant number, since it is smaller than the sum of its proper divisors (66423152463).

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

61432520625 is a wasteful number, since it uses less digits than its factorization.

61432520625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13953 (or 13935 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 61432520625 in words is "sixty-one billion, four hundred thirty-two million, five hundred twenty thousand, six hundred twenty-five".