61225166 has 4 divisors (see below), whose sum is σ = 91837752. Its totient is φ = 30612582.

The previous prime is 61225159. The next prime is 61225169. The reversal of 61225166 is 66152216.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61225169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15306290 + ... + 15306293.

It is an arithmetic number, because the mean of its divisors is an integer number (22959438).

Almost surely, 2^61225166 is an apocalyptic number.

61225166 is a deficient number, since it is larger than the sum of its proper divisors (30612586).

61225166 is a wasteful number, since it uses less digits than its factorization.

61225166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30612585.

The product of its digits is 4320, while the sum is 29.

The square root of 61225166 is about 7824.6511743336. The cubic root of 61225166 is about 394.1334762109.

The spelling of 61225166 in words is "sixty-one million, two hundred twenty-five thousand, one hundred sixty-six".