15247345896225 has 135 divisors (see below), whose sum is σ = 29814612382467. Its totient is φ = 7702235269920.

The previous prime is 15247345896217. The next prime is 15247345896239. The reversal of 15247345896225 is 52269854374251.

The square root of 15247345896225 is 3904785.

It is a perfect power (a square), and thus also a powerful number.

15247345896225 is a `hidden beast` number, since 1 + 5 + 2 + 4 + 73 + 458 + 96 + 2 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5489044522641 + 9758301373584 = 2342871^2 + 3123828^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 15247345896225 - 2³ = 15247345896217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 3338588892 + ... + 3338593458.

Almost surely, 2^{15247345896225} is an apocalyptic number.

15247345896225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15247345896225 is the 3904785-th square number.

15247345896225 is the 1952393-rd centered octagonal number.

It is an amenable number.

15247345896225 is a deficient number, since it is larger than the sum of its proper divisors (14567266486242).

15247345896225 is an frugal number, since it uses more digits than its factorization.

15247345896225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194 (or 4594 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 63.

The spelling of 15247345896225 in words is "fifteen trillion, two hundred forty-seven billion, three hundred forty-five million, eight hundred ninety-six thousand, two hundred twenty-five".