2591319025 has 9 divisors (see below), whose sum is σ = 3213551233. Its totient is φ = 2072851600.

The previous prime is 2591319007. The next prime is 2591319091. The reversal of 2591319025 is 5209131952.

The square root of 2591319025 is 50905.

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 4986289 + 2586332736 = 2233^2 + 50856^2 .

It is not a de Polignac number, because 2591319025 - 2¹⁷ = 2591187953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 249435 + ... + 259615.

Almost surely, 2^2591319025 is an apocalyptic number.

2591319025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2591319025 is the 50905-th square number.

2591319025 is the 25453-rd centered octagonal number.

It is an amenable number.

2591319025 is a deficient number, since it is larger than the sum of its proper divisors (622232208).

2591319025 is an frugal number, since it uses more digits than its factorization.

2591319025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 10186 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The cubic root of 2591319025 is about 1373.5367839564.

The spelling of 2591319025 in words is "two billion, five hundred ninety-one million, three hundred nineteen thousand, twenty-five".