25819893 has 12 divisors (see below), whose sum is σ = 40686048. Its totient is φ = 15648360.

The previous prime is 25819883. The next prime is 25819903. The reversal of 25819893 is 39891852.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25819883) and next prime (25819903).

It is not a de Polignac number, because 25819893 - 2⁴ = 25819877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25819853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130305 + ... + 130502.

It is an arithmetic number, because the mean of its divisors is an integer number (3390504).

Almost surely, 2^25819893 is an apocalyptic number.

It is an amenable number.

25819893 is a deficient number, since it is larger than the sum of its proper divisors (14866155).

25819893 is a wasteful number, since it uses less digits than its factorization.

25819893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260824 (or 260821 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 25819893 is about 5081.3278776320. The cubic root of 25819893 is about 295.5639618644.

It can be divided in two parts, 25 and 819893, that added together give a palindrome (819918).

The spelling of 25819893 in words is "twenty-five million, eight hundred nineteen thousand, eight hundred ninety-three".