61885625 has 10 divisors (see below), whose sum is σ = 77333058. Its totient is φ = 49508000.

The previous prime is 61885619. The next prime is 61885633. The reversal of 61885625 is 52658816.

61885625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 47224384 + 14661241 = 6872^2 + 3829^2 .

It is not a de Polignac number, because 61885625 - 2¹⁰ = 61884601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48884 + ... + 50133.

Almost surely, 2^61885625 is an apocalyptic number.

It is an amenable number.

61885625 is a deficient number, since it is larger than the sum of its proper divisors (15447433).

61885625 is an frugal number, since it uses more digits than its factorization.

61885625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99037 (or 99022 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 61885625 is about 7866.7417016195. The cubic root of 61885625 is about 395.5456327409.

The spelling of 61885625 in words is "sixty-one million, eight hundred eighty-five thousand, six hundred twenty-five".