25773891 has 32 divisors (see below), whose sum is σ = 40975872. Its totient is φ = 14204160.

The previous prime is 25773877. The next prime is 25773893. The reversal of 25773891 is 19837752.

It is not a de Polignac number, because 25773891 - 2⁵ = 25773859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25773893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30906 + ... + 31728.

It is an arithmetic number, because the mean of its divisors is an integer number (1280496).

Almost surely, 2^25773891 is an apocalyptic number.

25773891 is a deficient number, since it is larger than the sum of its proper divisors (15201981).

25773891 is a wasteful number, since it uses less digits than its factorization.

25773891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its digits is 105840, while the sum is 42.

The square root of 25773891 is about 5076.7992869524. The cubic root of 25773891 is about 295.3883270528.

The spelling of 25773891 in words is "twenty-five million, seven hundred seventy-three thousand, eight hundred ninety-one".