25335220225 has 12 divisors (see below), whose sum is σ = 35903626624. Its totient is φ = 17372722320.

The previous prime is 25335220201. The next prime is 25335220231. The reversal of 25335220225 is 52202253352.

It is not a de Polignac number, because 25335220225 - 2¹³ = 25335212033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72386169 + ... + 72386518.

Almost surely, 2^25335220225 is an apocalyptic number.

25335220225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25335220225 is a deficient number, since it is larger than the sum of its proper divisors (10568406399).

25335220225 is a wasteful number, since it uses less digits than its factorization.

25335220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144772704 (or 144772699 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 25335220225 its reverse (52202253352), we get a palindrome (77537473577).

The spelling of 25335220225 in words is "twenty-five billion, three hundred thirty-five million, two hundred twenty thousand, two hundred twenty-five".