225452865537 has 16 divisors (see below), whose sum is σ = 334995369280. Its totient is φ = 149855904576.

The previous prime is 225452865497. The next prime is 225452865551. The reversal of 225452865537 is 735568254522.

225452865537 is a `hidden beast` number, since 2 + 2 + 5 + 4 + 5 + 2 + 86 + 553 + 7 = 666.

It is not a de Polignac number, because 225452865537 - 2⁷ = 225452865409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225452865577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12379783 + ... + 12397980.

It is an arithmetic number, because the mean of its divisors is an integer number (20937210580).

Almost surely, 2^225452865537 is an apocalyptic number.

225452865537 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

225452865537 is a deficient number, since it is larger than the sum of its proper divisors (109542503743).

225452865537 is a wasteful number, since it uses less digits than its factorization.

225452865537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778109 (or 24778103 counting only the distinct ones).

The product of its digits is 20160000, while the sum is 54.

The spelling of 225452865537 in words is "two hundred twenty-five billion, four hundred fifty-two million, eight hundred sixty-five thousand, five hundred thirty-seven".