25250212225 has 24 divisors (see below), whose sum is σ = 36937461248. Its totient is φ = 16755897600.

The previous prime is 25250212193. The next prime is 25250212231. The reversal of 25250212225 is 52221205252.

It is a happy number.

It is not a de Polignac number, because 25250212225 - 2⁵ = 25250212193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25250212193 and 25250212202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2321784 + ... + 2332633.

Almost surely, 2^25250212225 is an apocalyptic number.

25250212225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25250212225 is a deficient number, since it is larger than the sum of its proper divisors (11687249023).

25250212225 is a wasteful number, since it uses less digits than its factorization.

25250212225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654465 (or 4654460 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 25250212225 its reverse (52221205252), we get a palindrome (77471417477).

The spelling of 25250212225 in words is "twenty-five billion, two hundred fifty million, two hundred twelve thousand, two hundred twenty-five".