2499245 has 18 divisors (see below), whose sum is σ = 3523626. Its totient is φ = 1696800.

The previous prime is 2499197. The next prime is 2499247. The reversal of 2499245 is 5429942.

It can be written as a sum of positive squares in 3 ways, for example, as 1552516 + 946729 = 1246^2 + 973^2 .

It is not a de Polignac number, because 2499245 - 2⁸ = 2498989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499247) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24695 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (195757).

2^2499245 is an apocalyptic number.

It is an amenable number.

2499245 is a deficient number, since it is larger than the sum of its proper divisors (1024381).

2499245 is an equidigital number, since it uses as much as digits as its factorization.

2499245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 113 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 2499245 is about 1580.9000600924. The cubic root of 2499245 is about 135.7072168855.

Multiplying 2499245 by its product of digits (25920), we get a square (64780430400 = 254520²).

It can be divided in two parts, 2499 and 245, that added together give a cube (2744 = 14³).

The spelling of 2499245 in words is "two million, four hundred ninety-nine thousand, two hundred forty-five".