25245444 has 96 divisors (see below), whose sum is σ = 71608320. Its totient is φ = 6766848.

The previous prime is 25245431. The next prime is 25245491. The reversal of 25245444 is 44454252.

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, 140947 + ... + 141125.

It is an arithmetic number, because the mean of its divisors is an integer number (745920).

Almost surely, 2^25245444 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 25245444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35804160).

25245444 is an abundant number, since it is smaller than the sum of its proper divisors (46362876).

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

25245444 is a wasteful number, since it uses less digits than its factorization.

25245444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 287 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 25245444 is about 5024.4844511651. The cubic root of 25245444 is about 293.3555693658.

Adding to 25245444 its reverse (44454252), we get a palindrome (69699696).

The spelling of 25245444 in words is "twenty-five million, two hundred forty-five thousand, four hundred forty-four".