225774138 has 16 divisors (see below), whose sum is σ = 451732320. Its totient is φ = 75227376.

The previous prime is 225774137. The next prime is 225774139. The reversal of 225774138 is 831477522.

225774138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225774137) and next prime (225774139).

It is a super-2 number, since 2×225774138² = 101947922779286088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225774096 and 225774105.

It is not an unprimeable number, because it can be changed into a prime (225774137) 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, 12268 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (28233270).

Almost surely, 2^225774138 is an apocalyptic number.

225774138 is an abundant number, since it is smaller than the sum of its proper divisors (225958182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225774138 is a wasteful number, since it uses less digits than its factorization.

225774138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15341.

The product of its digits is 94080, while the sum is 39.

The square root of 225774138 is about 15025.7824421892. The cubic root of 225774138 is about 608.9169512589.

The spelling of 225774138 in words is "two hundred twenty-five million, seven hundred seventy-four thousand, one hundred thirty-eight".