25928819 has 16 divisors (see below), whose sum is σ = 30855168. Its totient is φ = 21327072.

The previous prime is 25928807. The next prime is 25928869. The reversal of 25928819 is 91882952.

It is a cyclic number.

It is not a de Polignac number, because 25928819 - 2⁸ = 25928563 is a prime.

It is a super-2 number, since 2×25928819² = 1344607309469522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25928819.

It is not an unprimeable number, because it can be changed into a prime (25928869) 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, 16694 + ... + 18180.

It is an arithmetic number, because the mean of its divisors is an integer number (1928448).

Almost surely, 2^25928819 is an apocalyptic number.

25928819 is a deficient number, since it is larger than the sum of its proper divisors (4926349).

25928819 is a wasteful number, since it uses less digits than its factorization.

25928819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its digits is 103680, while the sum is 44.

The square root of 25928819 is about 5092.0348584824. The cubic root of 25928819 is about 295.9790091945.

It can be divided in two parts, 2592 and 8819, that added together give a palindrome (11411).

The spelling of 25928819 in words is "twenty-five million, nine hundred twenty-eight thousand, eight hundred nineteen".