61988925 has 48 divisors (see below), whose sum is σ = 110617920. Its totient is φ = 30528000.

The previous prime is 61988909. The next prime is 61988939. The reversal of 61988925 is 52988916.

It is a happy number.

It is not a de Polignac number, because 61988925 - 2⁴ = 61988909 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57895 + ... + 58955.

It is an arithmetic number, because the mean of its divisors is an integer number (2304540).

Almost surely, 2^61988925 is an apocalyptic number.

It is an amenable number.

61988925 is a deficient number, since it is larger than the sum of its proper divisors (48628995).

61988925 is a wasteful number, since it uses less digits than its factorization.

61988925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1129 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 61988925 is about 7873.3045793999. The cubic root of 61988925 is about 395.7655930864.

Subtracting from 61988925 its reverse (52988916), we obtain a palindrome (9000009).

The spelling of 61988925 in words is "sixty-one million, nine hundred eighty-eight thousand, nine hundred twenty-five".