25725791 has 16 divisors (see below), whose sum is σ = 33331200. Its totient is φ = 19281888.

The previous prime is 25725781. The next prime is 25725793. The reversal of 25725791 is 19752752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25725791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5711 + ... + 9168.

It is an arithmetic number, because the mean of its divisors is an integer number (2083200).

Almost surely, 2^25725791 is an apocalyptic number.

25725791 is a deficient number, since it is larger than the sum of its proper divisors (7605409).

25725791 is a wasteful number, since it uses less digits than its factorization.

25725791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14918.

The product of its digits is 44100, while the sum is 38.

The square root of 25725791 is about 5072.0598379751. The cubic root of 25725791 is about 295.2044584719.

The spelling of 25725791 in words is "twenty-five million, seven hundred twenty-five thousand, seven hundred ninety-one".