25345005225 has 12 divisors (see below), whose sum is σ = 41903742096. Its totient is φ = 13517336080.

The previous prime is 25345005221. The next prime is 25345005251. The reversal of 25345005225 is 52250054352.

It is not a de Polignac number, because 25345005225 - 2² = 25345005221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25345005221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168966627 + ... + 168966776.

It is an arithmetic number, because the mean of its divisors is an integer number (3491978508).

Almost surely, 2^25345005225 is an apocalyptic number.

25345005225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25345005225 is a deficient number, since it is larger than the sum of its proper divisors (16558736871).

25345005225 is a wasteful number, since it uses less digits than its factorization.

25345005225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337933416 (or 337933411 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

Adding to 25345005225 its reverse (52250054352), we get a palindrome (77595059577).

The spelling of 25345005225 in words is "twenty-five billion, three hundred forty-five million, five thousand, two hundred twenty-five".