4971539793025 has 27 divisors (see below), whose sum is σ = 6675589931049. Its totient is φ = 3671183898720.

The previous prime is 4971539793023. The next prime is 4971539793079. The reversal of 4971539793025 is 5203979351794.

The square root of 4971539793025 is 2229695.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1281421736001 + 3690118057024 = 1131999^2 + 1920968^2 .

It is not a de Polignac number, because 4971539793025 - 2¹ = 4971539793023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4971539793023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 144913024 + ... + 144947326.

Almost surely, 2^{4971539793025} is an apocalyptic number.

4971539793025 is the 2229695-th square number.

4971539793025 is the 1114848-th centered octagonal number.

It is an amenable number.

4971539793025 is a deficient number, since it is larger than the sum of its proper divisors (1704050138024).

4971539793025 is an frugal number, since it uses more digits than its factorization.

4971539793025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68642 (or 34321 counting only the distinct ones).

The product of its (nonzero) digits is 64297800, while the sum is 64.

Multiplying 4971539793025 by its sum of digits (64), we get a square (318178546753600 = 17837560²).

The spelling of 4971539793025 in words is "four trillion, nine hundred seventy-one billion, five hundred thirty-nine million, seven hundred ninety-three thousand, twenty-five".