25003242 has 56 divisors (see below), whose sum is σ = 61382880. Its totient is φ = 7571880.

The previous prime is 25003217. The next prime is 25003247. The reversal of 25003242 is 24230052.

It is a super-2 number, since 2×25003242² = 1250324221021128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (25003247) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 15259 + ... + 16817.

Almost surely, 2^25003242 is an apocalyptic number.

25003242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25003242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30691440).

25003242 is an abundant number, since it is smaller than the sum of its proper divisors (36379638).

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

25003242 is a wasteful number, since it uses less digits than its factorization.

25003242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25003242 is about 5000.3241894901. The cubic root of 25003242 is about 292.4144128290.

Adding to 25003242 its reverse (24230052), we get a palindrome (49233294).

The spelling of 25003242 in words is "twenty-five million, three thousand, two hundred forty-two".