225661887297 has 48 divisors (see below), whose sum is σ = 415033362432. Its totient is φ = 114732747360.

The previous prime is 225661887293. The next prime is 225661887301. The reversal of 225661887297 is 792788166522.

225661887297 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 618 + 8 + 7 + 2 + 9 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (225661887293) and next prime (225661887301).

It is not a de Polignac number, because 225661887297 - 2² = 225661887293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (225661887293) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3431583 + ... + 3496724.

It is an arithmetic number, because the mean of its divisors is an integer number (8646528384).

Almost surely, 2^225661887297 is an apocalyptic number.

It is an amenable number.

225661887297 is a deficient number, since it is larger than the sum of its proper divisors (189371475135).

225661887297 is a wasteful number, since it uses less digits than its factorization.

225661887297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928378 (or 6928375 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 225661887297 in words is "two hundred twenty-five billion, six hundred sixty-one million, eight hundred eighty-seven thousand, two hundred ninety-seven".