225693738 has 12 divisors (see below), whose sum is σ = 489003138. Its totient is φ = 75231240.

The previous prime is 225693737. The next prime is 225693739. The reversal of 225693738 is 837396522.

225693738 is a `hidden beast` number, since 22 + 569 + 37 + 38 = 666.

225693738 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 (225693737) and next prime (225693739).

It can be written as a sum of positive squares in only one way, i.e., 225090009 + 603729 = 15003^2 + 777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225693693 and 225693702.

It is not an unprimeable number, because it can be changed into a prime (225693731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6269253 + ... + 6269288.

Almost surely, 2^225693738 is an apocalyptic number.

225693738 is an abundant number, since it is smaller than the sum of its proper divisors (263309400).

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

225693738 is a wasteful number, since it uses less digits than its factorization.

225693738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538549 (or 12538546 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 225693738 is about 15023.1068025226. The cubic root of 225693738 is about 608.8446625906.

The spelling of 225693738 in words is "two hundred twenty-five million, six hundred ninety-three thousand, seven hundred thirty-eight".