25725485279 has 16 divisors (see below), whose sum is σ = 27996800832. Its totient is φ = 23496334848.

The previous prime is 25725485231. The next prime is 25725485281. The reversal of 25725485279 is 97258452752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25725485279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725485299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729277 + ... + 1744089.

It is an arithmetic number, because the mean of its divisors is an integer number (1749800052).

Almost surely, 2^25725485279 is an apocalyptic number.

25725485279 is a deficient number, since it is larger than the sum of its proper divisors (2271315553).

25725485279 is a wasteful number, since it uses less digits than its factorization.

25725485279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16226.

The product of its digits is 14112000, while the sum is 56.

The spelling of 25725485279 in words is "twenty-five billion, seven hundred twenty-five million, four hundred eighty-five thousand, two hundred seventy-nine".