25952819 has 4 divisors (see below), whose sum is σ = 25971696. Its totient is φ = 25933944.

The previous prime is 25952777. The next prime is 25952821. The reversal of 25952819 is 91825952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25952819 is a prime.

It is a super-2 number, since 2×25952819² = 1347097628093522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25952519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7199 + ... + 10184.

It is an arithmetic number, because the mean of its divisors is an integer number (6492924).

Almost surely, 2^25952819 is an apocalyptic number.

25952819 is a deficient number, since it is larger than the sum of its proper divisors (18877).

25952819 is a wasteful number, since it uses less digits than its factorization.

25952819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18876.

The product of its digits is 64800, while the sum is 41.

The square root of 25952819 is about 5094.3909351364. The cubic root of 25952819 is about 296.0703015084.

The spelling of 25952819 in words is "twenty-five million, nine hundred fifty-two thousand, eight hundred nineteen".