61225790 has 32 divisors (see below), whose sum is σ = 117504000. Its totient is φ = 22902048.

The previous prime is 61225783. The next prime is 61225799. The reversal of 61225790 is 9752216.

It is a super-2 number, since 2×61225790² = 7497194722248200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61225799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12971 + ... + 17049.

It is an arithmetic number, because the mean of its divisors is an integer number (3672000).

Almost surely, 2^61225790 is an apocalyptic number.

61225790 is a deficient number, since it is larger than the sum of its proper divisors (56278210).

61225790 is a wasteful number, since it uses less digits than its factorization.

61225790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 61225790 is about 7824.6910482140. The cubic root of 61225790 is about 394.1348151944.

The spelling of 61225790 in words is "sixty-one million, two hundred twenty-five thousand, seven hundred ninety".