25872919 has 2 divisors, whose sum is σ = 25872920. Its totient is φ = 25872918.

The previous prime is 25872911. The next prime is 25872949. The reversal of 25872919 is 91927852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25872919 - 2³ = 25872911 is a prime.

It is a super-2 number, since 2×25872919² = 1338815875161122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25872911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12936459 + 12936460.

It is an arithmetic number, because the mean of its divisors is an integer number (12936460).

Almost surely, 2^25872919 is an apocalyptic number.

25872919 is a deficient number, since it is larger than the sum of its proper divisors (1).

25872919 is an equidigital number, since it uses as much as digits as its factorization.

25872919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 25872919 is about 5086.5429320905. The cubic root of 25872919 is about 295.7661555503.

The spelling of 25872919 in words is "twenty-five million, eight hundred seventy-two thousand, nine hundred nineteen".