15255353565 has 16 divisors (see below), whose sum is σ = 27120628800. Its totient is φ = 8136188496.

The previous prime is 15255353521. The next prime is 15255353573. The reversal of 15255353565 is 56535355251.

15255353565 is a `hidden beast` number, since 1 + 5 + 2 + 5 + 53 + 535 + 65 = 666.

It is not a de Polignac number, because 15255353565 - 2¹⁸ = 15255091421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15255353565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56501175 + ... + 56501444.

It is an arithmetic number, because the mean of its divisors is an integer number (1695039300).

Almost surely, 2^15255353565 is an apocalyptic number.

15255353565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15255353565 is a deficient number, since it is larger than the sum of its proper divisors (11865275235).

15255353565 is a wasteful number, since it uses less digits than its factorization.

15255353565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113002633 (or 113002627 counting only the distinct ones).

The product of its digits is 1687500, while the sum is 45.

The spelling of 15255353565 in words is "fifteen billion, two hundred fifty-five million, three hundred fifty-three thousand, five hundred sixty-five".