25753854721 has 8 divisors (see below), whose sum is σ = 29440087040. Its totient is φ = 22069399968.

The previous prime is 25753854701. The next prime is 25753854769. The reversal of 25753854721 is 12745835752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25753854721 - 2¹¹ = 25753852673 is a prime.

It is a super-2 number, since 2×25753854721² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25753854701) 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 7 ways as a sum of consecutive naturals, for example, 413196 + ... + 471421.

It is an arithmetic number, because the mean of its divisors is an integer number (3680010880).

Almost surely, 2^25753854721 is an apocalyptic number.

It is an amenable number.

25753854721 is a deficient number, since it is larger than the sum of its proper divisors (3686232319).

25753854721 is an equidigital number, since it uses as much as digits as its factorization.

25753854721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888783.

The product of its digits is 2352000, while the sum is 49.

It can be divided in two parts, 2575 and 3854721, that added together give a square (3857296 = 1964²).

The spelling of 25753854721 in words is "twenty-five billion, seven hundred fifty-three million, eight hundred fifty-four thousand, seven hundred twenty-one".