15530213025 has 120 divisors (see below), whose sum is σ = 29340622080. Its totient is φ = 8119388160.

The previous prime is 15530212993. The next prime is 15530213047. The reversal of 15530213025 is 52031203551.

It is a happy number.

15530213025 is a `hidden beast` number, since 1 + 55 + 302 + 1 + 302 + 5 = 666.

It is not a de Polignac number, because 15530213025 - 2⁵ = 15530212993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 15530213025.

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 30874924 + ... + 30875426.

It is an arithmetic number, because the mean of its divisors is an integer number (244505184).

Almost surely, 2^15530213025 is an apocalyptic number.

15530213025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15530213025 is a deficient number, since it is larger than the sum of its proper divisors (13810409055).

15530213025 is a wasteful number, since it uses less digits than its factorization.

15530213025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 15530213025 its reverse (52031203551), we get a palindrome (67561416576).

The spelling of 15530213025 in words is "fifteen billion, five hundred thirty million, two hundred thirteen thousand, twenty-five".