225638264 has 8 divisors (see below), whose sum is σ = 423071760. Its totient is φ = 112819128.

The previous prime is 225638261. The next prime is 225638267. The reversal of 225638264 is 462836522.

It is an interprime number because it is at equal distance from previous prime (225638261) and next prime (225638267).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225638261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14102384 + ... + 14102399.

It is an arithmetic number, because the mean of its divisors is an integer number (52883970).

Almost surely, 2^225638264 is an apocalyptic number.

It is an amenable number.

225638264 is a deficient number, since it is larger than the sum of its proper divisors (197433496).

225638264 is a wasteful number, since it uses less digits than its factorization.

225638264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204789 (or 28204785 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 225638264 is about 15021.2603998466. The cubic root of 225638264 is about 608.7947751979.

The spelling of 225638264 in words is "two hundred twenty-five million, six hundred thirty-eight thousand, two hundred sixty-four".