225637247 has 8 divisors (see below), whose sum is σ = 246851280. Its totient is φ = 204540160.

The previous prime is 225637201. The next prime is 225637253. The reversal of 225637247 is 742736522.

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

It is not a de Polignac number, because 225637247 - 2¹⁶ = 225571711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225637247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225637267) 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, 25172 + ... + 32937.

It is an arithmetic number, because the mean of its divisors is an integer number (30856410).

Almost surely, 2^225637247 is an apocalyptic number.

225637247 is a deficient number, since it is larger than the sum of its proper divisors (21214033).

225637247 is a wasteful number, since it uses less digits than its factorization.

225637247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58473.

The product of its digits is 141120, while the sum is 38.

The square root of 225637247 is about 15021.2265477890. The cubic root of 225637247 is about 608.7938605403.

The spelling of 225637247 in words is "two hundred twenty-five million, six hundred thirty-seven thousand, two hundred forty-seven".