25249998 has 64 divisors (see below), whose sum is σ = 57231360. Its totient is φ = 7383552.

The previous prime is 25249979. The next prime is 25249999. The reversal of 25249998 is 89994252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25249999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110148 + ... + 110376.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^25249998 is an apocalyptic number.

25249998 is an abundant number, since it is smaller than the sum of its proper divisors (31981362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25249998 is a wasteful number, since it uses less digits than its factorization.

25249998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 466560, while the sum is 48.

The square root of 25249998 is about 5024.9376115530. The cubic root of 25249998 is about 293.3732076763.

The spelling of 25249998 in words is "twenty-five million, two hundred forty-nine thousand, nine hundred ninety-eight".