25523225 has 36 divisors (see below), whose sum is σ = 39211776. Its totient is φ = 16136640.

The previous prime is 25523221. The next prime is 25523231. The reversal of 25523225 is 52232552.

It is a happy number.

It is not a de Polignac number, because 25523225 - 2² = 25523221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25523194 and 25523203.

It is not an unprimeable number, because it can be changed into a prime (25523221) 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 35 ways as a sum of consecutive naturals, for example, 29144 + ... + 30006.

It is an arithmetic number, because the mean of its divisors is an integer number (1089216).

Almost surely, 2^25523225 is an apocalyptic number.

25523225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25523225 is a deficient number, since it is larger than the sum of its proper divisors (13688551).

25523225 is a wasteful number, since it uses less digits than its factorization.

25523225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 888 counting only the distinct ones).

The product of its digits is 6000, while the sum is 26.

The square root of 25523225 is about 5052.0515634740. The cubic root of 25523225 is about 294.4275982873.

Adding to 25523225 its reverse (52232552), we get a palindrome (77755777).

The spelling of 25523225 in words is "twenty-five million, five hundred twenty-three thousand, two hundred twenty-five".