2597256249 has 8 divisors (see below), whose sum is σ = 3957723840. Its totient is φ = 1484146416.

The previous prime is 2597256227. The next prime is 2597256257. The reversal of 2597256249 is 9426527952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2597256249 - 2⁵ = 2597256217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2597256289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61839414 + ... + 61839455.

It is an arithmetic number, because the mean of its divisors is an integer number (494715480).

Almost surely, 2^2597256249 is an apocalyptic number.

It is an amenable number.

2597256249 is a deficient number, since it is larger than the sum of its proper divisors (1360467591).

2597256249 is a wasteful number, since it uses less digits than its factorization.

2597256249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123678879.

The product of its digits is 2721600, while the sum is 51.

The square root of 2597256249 is about 50963.2833420297. The cubic root of 2597256249 is about 1374.5849985478.

The spelling of 2597256249 in words is "two billion, five hundred ninety-seven million, two hundred fifty-six thousand, two hundred forty-nine".