1325047325449 has 27 divisors (see below), whose sum is σ = 1390375578837. Its totient is φ = 1262755170144.

The previous prime is 1325047325431. The next prime is 1325047325467. The reversal of 1325047325449 is 9445237405231.

The square root of 1325047325449 is 1151107.

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

It is an interprime number because it is at equal distance from previous prime (1325047325431) and next prime (1325047325467).

It can be written as a sum of positive squares in 4 ways, for example, as 528955107849 + 796092217600 = 727293^2 + 892240^2 .

It is not a de Polignac number, because 1325047325449 - 2¹⁷ = 1325047194377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325047325419) 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, 2257320534 + ... + 2257321120.

Almost surely, 2^{1325047325449} is an apocalyptic number.

1325047325449 is the 1151107-th square number.

1325047325449 is the 575554-th centered octagonal number.

It is an amenable number.

1325047325449 is a deficient number, since it is larger than the sum of its proper divisors (65328253388).

1325047325449 is an frugal number, since it uses more digits than its factorization.

1325047325449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

Multiplying 1325047325449 by its sum of digits (49), we get a square (64927318947001 = 8057749²).

The spelling of 1325047325449 in words is "one trillion, three hundred twenty-five billion, forty-seven million, three hundred twenty-five thousand, four hundred forty-nine".