25090842 has 48 divisors (see below), whose sum is σ = 60279552. Its totient is φ = 6935040.

The previous prime is 25090841. The next prime is 25090853. The reversal of 25090842 is 24809052.

It is not an unprimeable number, because it can be changed into a prime (25090841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7738 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (1255824).

Almost surely, 2^25090842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25090842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30139776).

25090842 is an abundant number, since it is smaller than the sum of its proper divisors (35188710).

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

25090842 is a wasteful number, since it uses less digits than its factorization.

25090842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25090842 is about 5009.0759626901. The cubic root of 25090842 is about 292.7555105371.

Adding to 25090842 its reverse (24809052), we get a palindrome (49899894).

The spelling of 25090842 in words is "twenty-five million, ninety thousand, eight hundred forty-two".