25225398 has 32 divisors (see below), whose sum is σ = 61153920. Its totient is φ = 7643880.

The previous prime is 25225397. The next prime is 25225441. The reversal of 25225398 is 89352252.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25225397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20640 + ... + 21827.

It is an arithmetic number, because the mean of its divisors is an integer number (1911060).

Almost surely, 2^25225398 is an apocalyptic number.

25225398 is an abundant number, since it is smaller than the sum of its proper divisors (35928522).

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

25225398 is a wasteful number, since it uses less digits than its factorization.

25225398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42489 (or 42483 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 25225398 is about 5022.4892234827. The cubic root of 25225398 is about 293.2779030363.

The spelling of 25225398 in words is "twenty-five million, two hundred twenty-five thousand, three hundred ninety-eight".