249245225 has 6 divisors (see below), whose sum is σ = 309064110. Its totient is φ = 199396160.

The previous prime is 249245221. The next prime is 249245257. The reversal of 249245225 is 522542942.

It can be written as a sum of positive squares in 3 ways, for example, as 30294016 + 218951209 = 5504^2 + 14797^2 .

It is not a de Polignac number, because 249245225 - 2² = 249245221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249245221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4984880 + ... + 4984929.

It is an arithmetic number, because the mean of its divisors is an integer number (51510685).

Almost surely, 2^249245225 is an apocalyptic number.

249245225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249245225 is a deficient number, since it is larger than the sum of its proper divisors (59818885).

249245225 is an equidigital number, since it uses as much as digits as its factorization.

249245225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969819 (or 9969814 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 249245225 is about 15787.5021773554. The cubic root of 249245225 is about 629.3259145940.

The spelling of 249245225 in words is "two hundred forty-nine million, two hundred forty-five thousand, two hundred twenty-five".