25400249 has 8 divisors (see below), whose sum is σ = 29070720. Its totient is φ = 21740256.

The previous prime is 25400233. The next prime is 25400251. The reversal of 25400249 is 94200452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25400249 - 2⁴ = 25400233 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25400269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3557 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (3633840).

Almost surely, 2^25400249 is an apocalyptic number.

It is an amenable number.

25400249 is a deficient number, since it is larger than the sum of its proper divisors (3670471).

25400249 is an equidigital number, since it uses as much as digits as its factorization.

25400249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25400249 is about 5039.8659704401. The cubic root of 25400249 is about 293.9539664455.

The spelling of 25400249 in words is "twenty-five million, four hundred thousand, two hundred forty-nine".