1539348897025 has 9 divisors (see below), whose sum is σ = 1908800324713. Its totient is φ = 1231474154800.

The previous prime is 1539348897001. The next prime is 1539348897029. The reversal of 1539348897025 is 5207988439351.

The square root of 1539348897025 is 1240705.

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 63648730369 + 1475700166656 = 252287^2 + 1214784^2 .

It is not a de Polignac number, because 1539348897025 - 2¹⁵ = 1539348864257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1539348897029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6079455 + ... + 6327595.

Almost surely, 2^{1539348897025} is an apocalyptic number.

1539348897025 is the 1240705-th square number.

1539348897025 is the 620353-rd centered octagonal number.

It is an amenable number.

1539348897025 is a deficient number, since it is larger than the sum of its proper divisors (369451427688).

1539348897025 is an frugal number, since it uses more digits than its factorization.

1539348897025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496292 (or 248146 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 64.

Multiplying 1539348897025 by its sum of digits (64), we get a square (98518329409600 = 9925640²).

The spelling of 1539348897025 in words is "one trillion, five hundred thirty-nine billion, three hundred forty-eight million, eight hundred ninety-seven thousand, twenty-five".