225974861 has 8 divisors (see below), whose sum is σ = 259178304. Its totient is φ = 193001760.

The previous prime is 225974857. The next prime is 225974899. The reversal of 225974861 is 168479522.

It is a happy number.

225974861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225974861 - 2² = 225974857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225974851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55475 + ... + 59408.

It is an arithmetic number, because the mean of its divisors is an integer number (32397288).

Almost surely, 2^225974861 is an apocalyptic number.

It is an amenable number.

225974861 is a deficient number, since it is larger than the sum of its proper divisors (33203443).

225974861 is a wasteful number, since it uses less digits than its factorization.

225974861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115171.

The product of its digits is 241920, while the sum is 44.

The square root of 225974861 is about 15032.4602444177. The cubic root of 225974861 is about 609.0973490014.

The spelling of 225974861 in words is "two hundred twenty-five million, nine hundred seventy-four thousand, eight hundred sixty-one".