61535725 has 12 divisors (see below), whose sum is σ = 76736160. Its totient is φ = 48950000.

The previous prime is 61535687. The next prime is 61535729. The reversal of 61535725 is 52753516.

It is not a de Polignac number, because 61535725 - 2⁹ = 61535213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61535729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2401 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (6394680).

Almost surely, 2^61535725 is an apocalyptic number.

It is an amenable number.

61535725 is a deficient number, since it is larger than the sum of its proper divisors (15200435).

61535725 is a wasteful number, since it uses less digits than its factorization.

61535725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13940 (or 13935 counting only the distinct ones).

The product of its digits is 31500, while the sum is 34.

The square root of 61535725 is about 7844.4709828006. The cubic root of 61535725 is about 394.7987545072.

The spelling of 61535725 in words is "sixty-one million, five hundred thirty-five thousand, seven hundred twenty-five".