61573825 has 6 divisors (see below), whose sum is σ = 76351574. Its totient is φ = 49259040.

The previous prime is 61573817. The next prime is 61573867. The reversal of 61573825 is 52837516.

61573825 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 3 ways, for example, as 123904 + 61449921 = 352^2 + 7839^2 .

It is not a de Polignac number, because 61573825 - 2³ = 61573817 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 5 ways as a sum of consecutive naturals, for example, 1231452 + ... + 1231501.

Almost surely, 2^61573825 is an apocalyptic number.

It is an amenable number.

61573825 is a deficient number, since it is larger than the sum of its proper divisors (14777749).

61573825 is a wasteful number, since it uses less digits than its factorization.

61573825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462963 (or 2462958 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 61573825 is about 7846.8990690591. The cubic root of 61573825 is about 394.8802179130.

The spelling of 61573825 in words is "sixty-one million, five hundred seventy-three thousand, eight hundred twenty-five".