25246566564253 has 4 divisors (see below), whose sum is σ = 25336411997148. Its totient is φ = 25156721131360.

The previous prime is 25246566564221. The next prime is 25246566564277. The reversal of 25246566564253 is 35246566564252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9216488441689 + 16030078122564 = 3035867^2 + 4003758^2 .

It is a cyclic number.

It is not a de Polignac number, because 25246566564253 - 2⁵ = 25246566564221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25246566564191 and 25246566564200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25246566564203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44922716026 + ... + 44922716587.

It is an arithmetic number, because the mean of its divisors is an integer number (6334102999287).

Almost surely, 2^{25246566564253} is an apocalyptic number.

It is an amenable number.

25246566564253 is a deficient number, since it is larger than the sum of its proper divisors (89845432895).

25246566564253 is an equidigital number, since it uses as much as digits as its factorization.

25246566564253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89845432894.

The product of its digits is 311040000, while the sum is 61.

Subtracting 25246566564253 from its reverse (35246566564252), we obtain a palindrome (9999999999999).

The spelling of 25246566564253 in words is "twenty-five trillion, two hundred forty-six billion, five hundred sixty-six million, five hundred sixty-four thousand, two hundred fifty-three".