249288025 has 12 divisors (see below), whose sum is σ = 353276992. Its totient is φ = 170940240.

The previous prime is 249288023. The next prime is 249288073. The reversal of 249288025 is 520882942.

It is a happy number.

It is not a de Polignac number, because 249288025 - 2¹ = 249288023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249288023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712077 + ... + 712426.

Almost surely, 2^249288025 is an apocalyptic number.

249288025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249288025 is a deficient number, since it is larger than the sum of its proper divisors (103988967).

249288025 is a wasteful number, since it uses less digits than its factorization.

249288025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424520 (or 1424515 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 249288025 is about 15788.8576217534. The cubic root of 249288025 is about 629.3619348194.

The spelling of 249288025 in words is "two hundred forty-nine million, two hundred eighty-eight thousand, twenty-five".