25563143225 has 12 divisors (see below), whose sum is σ = 31701262656. Its totient is φ = 20448601680.

The previous prime is 25563143197. The next prime is 25563143237. The reversal of 25563143225 is 52234136552.

It is not a de Polignac number, because 25563143225 - 2¹⁰ = 25563142201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264884 + ... + 348266.

It is an arithmetic number, because the mean of its divisors is an integer number (2641771888).

Almost surely, 2^25563143225 is an apocalyptic number.

25563143225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25563143225 is a deficient number, since it is larger than the sum of its proper divisors (6138119431).

25563143225 is a wasteful number, since it uses less digits than its factorization.

25563143225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95656 (or 95651 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

Adding to 25563143225 its reverse (52234136552), we get a palindrome (77797279777).

The spelling of 25563143225 in words is "twenty-five billion, five hundred sixty-three million, one hundred forty-three thousand, two hundred twenty-five".