25405038 has 24 divisors (see below), whose sum is σ = 58282848. Its totient is φ = 7970112.

The previous prime is 25405019. The next prime is 25405043. The reversal of 25405038 is 83050452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41206 + ... + 41817.

It is an arithmetic number, because the mean of its divisors is an integer number (2428452).

Almost surely, 2^25405038 is an apocalyptic number.

25405038 is an abundant number, since it is smaller than the sum of its proper divisors (32877810).

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

25405038 is a wasteful number, since it uses less digits than its factorization.

25405038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83048 (or 83045 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25405038 is about 5040.3410598887. The cubic root of 25405038 is about 293.9724394545.

The spelling of 25405038 in words is "twenty-five million, four hundred five thousand, thirty-eight".