25512145453 has 4 divisors (see below), whose sum is σ = 25517031520. Its totient is φ = 25507259388.

The previous prime is 25512145447. The next prime is 25512145471. The reversal of 25512145453 is 35454121552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25512145453 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 (25512145493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2435193 + ... + 2445646.

It is an arithmetic number, because the mean of its divisors is an integer number (6379257880).

Almost surely, 2^25512145453 is an apocalyptic number.

It is an amenable number.

25512145453 is a deficient number, since it is larger than the sum of its proper divisors (4886067).

25512145453 is an equidigital number, since it uses as much as digits as its factorization.

25512145453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886066.

The product of its digits is 120000, while the sum is 37.

The spelling of 25512145453 in words is "twenty-five billion, five hundred twelve million, one hundred forty-five thousand, four hundred fifty-three".