25542398 has 48 divisors (see below), whose sum is σ = 47744640. Its totient is φ = 10033536.

The previous prime is 25542389. The next prime is 25542421. The reversal of 25542398 is 89324552.

Its product of digits (86400) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238661 + ... + 238767.

It is an arithmetic number, because the mean of its divisors is an integer number (994680).

Almost surely, 2^25542398 is an apocalyptic number.

25542398 is a deficient number, since it is larger than the sum of its proper divisors (22202242).

25542398 is a wasteful number, since it uses less digits than its factorization.

25542398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 192 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 25542398 is about 5053.9487532028. The cubic root of 25542398 is about 294.5013043258.

The spelling of 25542398 in words is "twenty-five million, five hundred forty-two thousand, three hundred ninety-eight".