25210242 has 24 divisors (see below), whose sum is σ = 54718716. Its totient is φ = 8388576.

The previous prime is 25210217. The next prime is 25210247. The reversal of 25210242 is 24201252.

It can be written as a sum of positive squares in 2 ways, for example, as 25190361 + 19881 = 5019^2 + 141^2 .

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 (25210247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14988 + ... + 16584.

Almost surely, 2^25210242 is an apocalyptic number.

25210242 is an abundant number, since it is smaller than the sum of its proper divisors (29508474).

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

25210242 is a wasteful number, since it uses less digits than its factorization.

25210242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482 (or 2479 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 25210242 is about 5020.9801831913. The cubic root of 25210242 is about 293.2191552298.

Adding to 25210242 its reverse (24201252), we get a palindrome (49411494).

It can be divided in two parts, 25210 and 242, that added together give a palindrome (25452).

The spelling of 25210242 in words is "twenty-five million, two hundred ten thousand, two hundred forty-two".