2591318625 has 64 divisors (see below), whose sum is σ = 4979240448. Its totient is φ = 1172275200.

The previous prime is 2591318533. The next prime is 2591318627. The reversal of 2591318625 is 5268131952.

It is not a de Polignac number, because 2591318625 - 2¹⁵ = 2591285857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2591318627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249537 + ... + 259713.

It is an arithmetic number, because the mean of its divisors is an integer number (77800632).

Almost surely, 2^2591318625 is an apocalyptic number.

2591318625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2591318625 is a deficient number, since it is larger than the sum of its proper divisors (2387921823).

2591318625 is a wasteful number, since it uses less digits than its factorization.

2591318625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10299 (or 10289 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 2591318625 is about 50904.9960711127. The cubic root of 2591318625 is about 1373.5367132827.

The spelling of 2591318625 in words is "two billion, five hundred ninety-one million, three hundred eighteen thousand, six hundred twenty-five".