61558125 has 20 divisors (see below), whose sum is σ = 102567168. Its totient is φ = 32830000.

The previous prime is 61558117. The next prime is 61558129. The reversal of 61558125 is 52185516.

It is not a de Polignac number, because 61558125 - 2³ = 61558117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61558129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14541 + ... + 18290.

Almost surely, 2^61558125 is an apocalyptic number.

It is an amenable number.

61558125 is a deficient number, since it is larger than the sum of its proper divisors (41009043).

61558125 is an equidigital number, since it uses as much as digits as its factorization.

61558125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32854 (or 32839 counting only the distinct ones).

The product of its digits is 12000, while the sum is 33.

The square root of 61558125 is about 7845.8986101020. The cubic root of 61558125 is about 394.8466530748.

The spelling of 61558125 in words is "sixty-one million, five hundred fifty-eight thousand, one hundred twenty-five".