25255345436897 has 4 divisors (see below), whose sum is σ = 25260212535060. Its totient is φ = 25250478338736.

The previous prime is 25255345436869. The next prime is 25255345436929. The reversal of 25255345436897 is 79863454355252.

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 17682369811681 + 7572975625216 = 4205041^2 + 2751904^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255345436897 - 2¹⁸ = 25255345174753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25255345436837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2433541298 + ... + 2433551675.

It is an arithmetic number, because the mean of its divisors is an integer number (6315053133765).

Almost surely, 2^{25255345436897} is an apocalyptic number.

It is an amenable number.

25255345436897 is a deficient number, since it is larger than the sum of its proper divisors (4867098163).

25255345436897 is an equidigital number, since it uses as much as digits as its factorization.

25255345436897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867098162.

The product of its digits is 1088640000, while the sum is 68.

The spelling of 25255345436897 in words is "twenty-five trillion, two hundred fifty-five billion, three hundred forty-five million, four hundred thirty-six thousand, eight hundred ninety-seven".