25390232 has 64 divisors (see below), whose sum is σ = 58560000. Its totient is φ = 10287648.

The previous prime is 25390223. The next prime is 25390249. The reversal of 25390232 is 23209352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51893 + ... + 52379.

It is an arithmetic number, because the mean of its divisors is an integer number (915000).

Almost surely, 2^25390232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25390232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29280000).

25390232 is an abundant number, since it is smaller than the sum of its proper divisors (33169768).

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

25390232 is a wasteful number, since it uses less digits than its factorization.

25390232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 25390232 is about 5038.8720960151. The cubic root of 25390232 is about 293.9153195273.

Adding to 25390232 its reverse (23209352), we get a palindrome (48599584).

The spelling of 25390232 in words is "twenty-five million, three hundred ninety thousand, two hundred thirty-two".