15525454563 has 12 divisors (see below), whose sum is σ = 22434259848. Its totient is φ = 10346332320.

The previous prime is 15525454547. The next prime is 15525454573. The reversal of 15525454563 is 36545452551.

15525454563 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 545 + 45 + 63 = 666.

It is not a de Polignac number, because 15525454563 - 2⁴ = 15525454547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15525454513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306033 + ... + 353138.

It is an arithmetic number, because the mean of its divisors is an integer number (1869521654).

Almost surely, 2^15525454563 is an apocalyptic number.

15525454563 is a deficient number, since it is larger than the sum of its proper divisors (6908805285).

15525454563 is a wasteful number, since it uses less digits than its factorization.

15525454563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661794 (or 661791 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The spelling of 15525454563 in words is "fifteen billion, five hundred twenty-five million, four hundred fifty-four thousand, five hundred sixty-three".