15530055525 has 18 divisors (see below), whose sum is σ = 27816055410. Its totient is φ = 8282696160.

The previous prime is 15530055503. The next prime is 15530055533. The reversal of 15530055525 is 52555003551.

15530055525 is a `hidden beast` number, since 1 + 55 + 30 + 0 + 55 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 4556655009 + 10973400516 = 67503^2 + 104754^2 .

It is not a de Polignac number, because 15530055525 - 2⁸ = 15530055269 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15530055525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34511010 + ... + 34511459.

Almost surely, 2^15530055525 is an apocalyptic number.

15530055525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15530055525 is a deficient number, since it is larger than the sum of its proper divisors (12285999885).

15530055525 is a wasteful number, since it uses less digits than its factorization.

15530055525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69022485 (or 69022477 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 15530055525 in words is "fifteen billion, five hundred thirty million, fifty-five thousand, five hundred twenty-five".