249508245 has 24 divisors (see below), whose sum is σ = 464392224. Its totient is φ = 114060576.

The previous prime is 249508229. The next prime is 249508249. The reversal of 249508245 is 542805942.

It is not a de Polignac number, because 249508245 - 2⁴ = 249508229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249508249) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 168999 + ... + 170468.

It is an arithmetic number, because the mean of its divisors is an integer number (19349676).

Almost surely, 2^249508245 is an apocalyptic number.

It is an amenable number.

249508245 is a deficient number, since it is larger than the sum of its proper divisors (214883979).

249508245 is a wasteful number, since it uses less digits than its factorization.

249508245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339489 (or 339482 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 249508245 is about 15795.8299876898. The cubic root of 249508245 is about 629.5472055091.

The spelling of 249508245 in words is "two hundred forty-nine million, five hundred eight thousand, two hundred forty-five".