25445324053 has 4 divisors (see below), whose sum is σ = 25448047020. Its totient is φ = 25442601088.

The previous prime is 25445323997. The next prime is 25445324147. The reversal of 25445324053 is 35042354452.

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 8671706884 + 16773617169 = 93122^2 + 129513^2 .

It is a cyclic number.

It is not a de Polignac number, because 25445324053 - 2²¹ = 25443226901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25445324953) 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, 1347418 + ... + 1366171.

It is an arithmetic number, because the mean of its divisors is an integer number (6362011755).

Almost surely, 2^25445324053 is an apocalyptic number.

It is an amenable number.

25445324053 is a deficient number, since it is larger than the sum of its proper divisors (2722967).

25445324053 is an equidigital number, since it uses as much as digits as its factorization.

25445324053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722966.

The product of its (nonzero) digits is 288000, while the sum is 37.

The spelling of 25445324053 in words is "twenty-five billion, four hundred forty-five million, three hundred twenty-four thousand, fifty-three".