2499688225 has 6 divisors (see below), whose sum is σ = 3099613430. Its totient is φ = 1999750560.

The previous prime is 2499688207. The next prime is 2499688283. The reversal of 2499688225 is 5228869942.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 88209 + 2499600016 = 297^2 + 49996^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2499688225 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 49993740 + ... + 49993789.

Almost surely, 2^2499688225 is an apocalyptic number.

2499688225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2499688225 is a deficient number, since it is larger than the sum of its proper divisors (599925205).

2499688225 is an equidigital number, since it uses as much as digits as its factorization.

2499688225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99987539 (or 99987534 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 2499688225 is about 49996.8821527903. The cubic root of 2499688225 is about 1357.1523867818.

The spelling of 2499688225 in words is "two billion, four hundred ninety-nine million, six hundred eighty-eight thousand, two hundred twenty-five".