25552398 has 8 divisors (see below), whose sum is σ = 51104808. Its totient is φ = 8517464.

The previous prime is 25552367. The next prime is 25552399. The reversal of 25552398 is 89325552.

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

25552398 is an admirable number.

It is a super-4 number, since 4×25552398⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129361 + ... + 2129372.

It is an arithmetic number, because the mean of its divisors is an integer number (6388101).

Almost surely, 2^25552398 is an apocalyptic number.

25552398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25552398 is a wasteful number, since it uses less digits than its factorization.

25552398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258738.

The product of its digits is 108000, while the sum is 39.

The square root of 25552398 is about 5054.9379818154. The cubic root of 25552398 is about 294.5397323125.

The spelling of 25552398 in words is "twenty-five million, five hundred fifty-two thousand, three hundred ninety-eight".