25153998 has 16 divisors (see below), whose sum is σ = 50563200. Its totient is φ = 8342136.

The previous prime is 25153993. The next prime is 25154009. The reversal of 25153998 is 89935152.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25153993) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9340 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (3160200).

Almost surely, 2^25153998 is an apocalyptic number.

25153998 is an abundant number, since it is smaller than the sum of its proper divisors (25409202).

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

25153998 is a wasteful number, since it uses less digits than its factorization.

25153998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21271.

The product of its digits is 97200, while the sum is 42.

The square root of 25153998 is about 5015.3761573784. The cubic root of 25153998 is about 293.0009357485. Note that the first 3 decimals are identical.

The spelling of 25153998 in words is "twenty-five million, one hundred fifty-three thousand, nine hundred ninety-eight".