15243515025 has 12 divisors (see below), whose sum is σ = 25202611632. Its totient is φ = 8129874640.

The previous prime is 15243514943. The next prime is 15243515051. The reversal of 15243515025 is 52051534251.

It is a de Polignac number, because none of the positive numbers 2^k-15243515025 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101623359 + ... + 101623508.

It is an arithmetic number, because the mean of its divisors is an integer number (2100217636).

Almost surely, 2^15243515025 is an apocalyptic number.

15243515025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15243515025 is a deficient number, since it is larger than the sum of its proper divisors (9959096607).

15243515025 is a wasteful number, since it uses less digits than its factorization.

15243515025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203246880 (or 203246875 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 15243515025 in words is "fifteen billion, two hundred forty-three million, five hundred fifteen thousand, twenty-five".