249360025 has 6 divisors (see below), whose sum is σ = 309206462. Its totient is φ = 199488000.

The previous prime is 249359989. The next prime is 249360037. The reversal of 249360025 is 520063942.

It can be written as a sum of positive squares in 3 ways, for example, as 11614464 + 237745561 = 3408^2 + 15419^2 .

It is a de Polignac number, because none of the positive numbers 2^k-249360025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4987176 + ... + 4987225.

Almost surely, 2^249360025 is an apocalyptic number.

249360025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249360025 is a deficient number, since it is larger than the sum of its proper divisors (59846437).

249360025 is an equidigital number, since it uses as much as digits as its factorization.

249360025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9974411 (or 9974406 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 249360025 is about 15791.1375461048. The cubic root of 249360025 is about 629.4225202906.

The spelling of 249360025 in words is "two hundred forty-nine million, three hundred sixty thousand, twenty-five".