25982869 has 16 divisors (see below), whose sum is σ = 29963520. Its totient is φ = 22308160.

The previous prime is 25982837. The next prime is 25982897. The reversal of 25982869 is 96828952.

It is a cyclic number.

It is not a de Polignac number, because 25982869 - 2⁵ = 25982837 is a prime.

It is a super-2 number, since 2×25982869² = 1350218962942322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25982819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14127 + ... + 15859.

It is an arithmetic number, because the mean of its divisors is an integer number (1872720).

Almost surely, 2^25982869 is an apocalyptic number.

25982869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25982869 is a deficient number, since it is larger than the sum of its proper divisors (3980651).

25982869 is a wasteful number, since it uses less digits than its factorization.

25982869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820.

The product of its digits is 622080, while the sum is 49.

The square root of 25982869 is about 5097.3394040421. The cubic root of 25982869 is about 296.1845277760.

The spelling of 25982869 in words is "twenty-five million, nine hundred eighty-two thousand, eight hundred sixty-nine".