61685125 has 8 divisors (see below), whose sum is σ = 76983192. Its totient is φ = 49348000.

The previous prime is 61685111. The next prime is 61685159. The reversal of 61685125 is 52158616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 564001 + 61121124 = 751^2 + 7818^2 .

It is not a de Polignac number, because 61685125 - 2⁵ = 61685093 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246616 + ... + 246865.

It is an arithmetic number, because the mean of its divisors is an integer number (9622899).

Almost surely, 2^61685125 is an apocalyptic number.

It is an amenable number.

61685125 is a deficient number, since it is larger than the sum of its proper divisors (15298067).

61685125 is an equidigital number, since it uses as much as digits as its factorization.

61685125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493496 (or 493486 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 61685125 is about 7853.9878405814. The cubic root of 61685125 is about 395.1180013845.

The spelling of 61685125 in words is "sixty-one million, six hundred eighty-five thousand, one hundred twenty-five".