25959799 has 4 divisors (see below), whose sum is σ = 27486864. Its totient is φ = 24432736.

The previous prime is 25959781. The next prime is 25959821. The reversal of 25959799 is 99795952.

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

It is a cyclic number.

It is not a de Polignac number, because 25959799 - 2⁷ = 25959671 is a prime.

It is a super-2 number, since 2×25959799² = 1347822328240802, 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 (25959599) 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, 763507 + ... + 763540.

It is an arithmetic number, because the mean of its divisors is an integer number (6871716).

Almost surely, 2^25959799 is an apocalyptic number.

25959799 is a deficient number, since it is larger than the sum of its proper divisors (1527065).

25959799 is a wasteful number, since it uses less digits than its factorization.

25959799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527064.

The product of its digits is 2296350, while the sum is 55.

The square root of 25959799 is about 5095.0759562542. The cubic root of 25959799 is about 296.0968417912.

The spelling of 25959799 in words is "twenty-five million, nine hundred fifty-nine thousand, seven hundred ninety-nine".