61512625 has 32 divisors (see below), whose sum is σ = 80870400. Its totient is φ = 46648000.

The previous prime is 61512623. The next prime is 61512653. The reversal of 61512625 is 52621516.

It is not a de Polignac number, because 61512625 - 2¹ = 61512623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61512593 and 61512602.

It is not an unprimeable number, because it can be changed into a prime (61512623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257256 + ... + 257494.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^61512625 is an apocalyptic number.

It is an amenable number.

61512625 is a deficient number, since it is larger than the sum of its proper divisors (19357775).

61512625 is a wasteful number, since it uses less digits than its factorization.

61512625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 344 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 61512625 is about 7842.9984699731. The cubic root of 61512625 is about 394.7493469333.

The spelling of 61512625 in words is "sixty-one million, five hundred twelve thousand, six hundred twenty-five".