25517340053 has 4 divisors (see below), whose sum is σ = 25517693088. Its totient is φ = 25516987020.

The previous prime is 25517340047. The next prime is 25517340061. The reversal of 25517340053 is 35004371552.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25517340053 - 2⁸ = 25517339797 is a prime.

It is a super-2 number, since 2×25517340053² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25517339995 and 25517340022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25517340353) 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, 24401 + ... + 227222.

It is an arithmetic number, because the mean of its divisors is an integer number (6379423272).

Almost surely, 2^25517340053 is an apocalyptic number.

It is an amenable number.

25517340053 is a deficient number, since it is larger than the sum of its proper divisors (353035).

25517340053 is a wasteful number, since it uses less digits than its factorization.

25517340053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353034.

The product of its (nonzero) digits is 63000, while the sum is 35.

The spelling of 25517340053 in words is "twenty-five billion, five hundred seventeen million, three hundred forty thousand, fifty-three".