2575172249 has 4 divisors (see below), whose sum is σ = 2773262436. Its totient is φ = 2377082064.

The previous prime is 2575172227. The next prime is 2575172273. The reversal of 2575172249 is 9422715752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1183360000 + 1391812249 = 34400^2 + 37307^2 .

It is a cyclic number.

It is not a de Polignac number, because 2575172249 - 2¹² = 2575168153 is a prime.

It is a super-2 number, since 2×2575172249² = 13263024224039436002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2575172209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99045074 + ... + 99045099.

It is an arithmetic number, because the mean of its divisors is an integer number (693315609).

Almost surely, 2^2575172249 is an apocalyptic number.

It is an amenable number.

2575172249 is a deficient number, since it is larger than the sum of its proper divisors (198090187).

2575172249 is a wasteful number, since it uses less digits than its factorization.

2575172249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198090186.

The product of its digits is 352800, while the sum is 44.

The square root of 2575172249 is about 50746.1550169074. The cubic root of 2575172249 is about 1370.6779547196.

The spelling of 2575172249 in words is "two billion, five hundred seventy-five million, one hundred seventy-two thousand, two hundred forty-nine".