25288251 has 8 divisors (see below), whose sum is σ = 34045440. Its totient is φ = 16694952.

The previous prime is 25288229. The next prime is 25288301. The reversal of 25288251 is 15288252.

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

It is not a de Polignac number, because 25288251 - 2⁶ = 25288187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25288451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40611 + ... + 41228.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^25288251 is an apocalyptic number.

25288251 is a deficient number, since it is larger than the sum of its proper divisors (8757189).

25288251 is a wasteful number, since it uses less digits than its factorization.

25288251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81945.

The product of its digits is 12800, while the sum is 33.

The square root of 25288251 is about 5028.7424869444. The cubic root of 25288251 is about 293.5212835016.

Subtracting from 25288251 its reverse (15288252), we obtain a palindrome (9999999).

The spelling of 25288251 in words is "twenty-five million, two hundred eighty-eight thousand, two hundred fifty-one".