25422225 has 48 divisors (see below), whose sum is σ = 45139968. Its totient is φ = 12579840.

The previous prime is 25422193. The next prime is 25422233. The reversal of 25422225 is 52222452.

It is a happy number.

It is not a de Polignac number, because 25422225 - 2⁵ = 25422193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25422195 and 25422204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161847 + ... + 162003.

It is an arithmetic number, because the mean of its divisors is an integer number (940416).

Almost surely, 2^25422225 is an apocalyptic number.

25422225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25422225 is a deficient number, since it is larger than the sum of its proper divisors (19717743).

25422225 is a wasteful number, since it uses less digits than its factorization.

25422225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 309 counting only the distinct ones).

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

The square root of 25422225 is about 5042.0457157785. The cubic root of 25422225 is about 294.0387171927.

Adding to 25422225 its reverse (52222452), we get a palindrome (77644677).

The spelling of 25422225 in words is "twenty-five million, four hundred twenty-two thousand, two hundred twenty-five".