25222424 has 64 divisors (see below), whose sum is σ = 54172800. Its totient is φ = 10934784.

The previous prime is 25222423. The next prime is 25222433. The reversal of 25222424 is 42422252.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 25222424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110999 + ... + 111225.

It is an arithmetic number, because the mean of its divisors is an integer number (846450).

Almost surely, 2^25222424 is an apocalyptic number.

It is an amenable number.

25222424 is an abundant number, since it is smaller than the sum of its proper divisors (28950376).

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

25222424 is a wasteful number, since it uses less digits than its factorization.

25222424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 308 counting only the distinct ones).

The product of its digits is 2560, while the sum is 23.

The square root of 25222424 is about 5022.1931464252. The cubic root of 25222424 is about 293.2663770501.

Adding to 25222424 its reverse (42422252), we get a palindrome (67644676).

The spelling of 25222424 in words is "twenty-five million, two hundred twenty-two thousand, four hundred twenty-four".