61289325 has 96 divisors (see below), whose sum is σ = 121420800. Its totient is φ = 30240000.

The previous prime is 61289303. The next prime is 61289329. The reversal of 61289325 is 52398216.

61289325 is a `hidden beast` number, since 612 + 8 + 9 + 32 + 5 = 666.

It is not a de Polignac number, because 61289325 - 2¹⁰ = 61288301 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (25920) is a multiple of the sum of its prime factors (180).

It is a self number, because there is not a number n which added to its sum of digits gives 61289325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61289329) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 606775 + ... + 606875.

It is an arithmetic number, because the mean of its divisors is an integer number (1264800).

Almost surely, 2^61289325 is an apocalyptic number.

61289325 is the 4185-th nonagonal number.

It is an amenable number.

61289325 is a deficient number, since it is larger than the sum of its proper divisors (60131475).

61289325 is a wasteful number, since it uses less digits than its factorization.

61289325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 169 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 61289325 is about 7828.7499002076. The cubic root of 61289325 is about 394.2711014366.

The spelling of 61289325 in words is "sixty-one million, two hundred eighty-nine thousand, three hundred twenty-five".