25222425 has 24 divisors (see below), whose sum is σ = 42143136. Its totient is φ = 13309440.

The previous prime is 25222423. The next prime is 25222433. The reversal of 25222425 is 52422252.

It is a happy number.

It is not a de Polignac number, because 25222425 - 2¹ = 25222423 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25222395 and 25222404.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5542 + ... + 9008.

It is an arithmetic number, because the mean of its divisors is an integer number (1755964).

Almost surely, 2^25222425 is an apocalyptic number.

25222425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25222425 is a deficient number, since it is larger than the sum of its proper divisors (16920711).

25222425 is a wasteful number, since it uses less digits than its factorization.

25222425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577 (or 3572 counting only the distinct ones).

The product of its digits is 3200, while the sum is 24.

The square root of 25222425 is about 5022.1932459833. The cubic root of 25222425 is about 293.2663809259.

Adding to 25222425 its reverse (52422252), we get a palindrome (77644677).

The spelling of 25222425 in words is "twenty-five million, two hundred twenty-two thousand, four hundred twenty-five".