25138230 has 64 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 6039936.

The previous prime is 25138181. The next prime is 25138247. The reversal of 25138230 is 3283152.

It is a self number, because there is not a number n which added to its sum of digits gives 25138230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16021 + ... + 17519.

It is an arithmetic number, because the mean of its divisors is an integer number (1039500).

Almost surely, 2^25138230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25138230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33264000).

25138230 is an abundant number, since it is smaller than the sum of its proper divisors (41389770).

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

25138230 is a wasteful number, since it uses less digits than its factorization.

25138230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25138230 is about 5013.8039451099. The cubic root of 25138230 is about 292.9396995657.

The spelling of 25138230 in words is "twenty-five million, one hundred thirty-eight thousand, two hundred thirty".