25454452565 has 16 divisors (see below), whose sum is σ = 30896821440. Its totient is φ = 20129366400.

The previous prime is 25454452561. The next prime is 25454452577. The reversal of 25454452565 is 56525445452.

It is not a de Polignac number, because 25454452565 - 2² = 25454452561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25454452561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2866262 + ... + 2875128.

It is an arithmetic number, because the mean of its divisors is an integer number (1931051340).

Almost surely, 2^25454452565 is an apocalyptic number.

It is an amenable number.

25454452565 is a deficient number, since it is larger than the sum of its proper divisors (5442368875).

25454452565 is an equidigital number, since it uses as much as digits as its factorization.

25454452565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15412.

The product of its digits is 4800000, while the sum is 47.

The spelling of 25454452565 in words is "twenty-five billion, four hundred fifty-four million, four hundred fifty-two thousand, five hundred sixty-five".