25998775 has 12 divisors (see below), whose sum is σ = 35169624. Its totient is φ = 18908000.

The previous prime is 25998767. The next prime is 25998781. The reversal of 25998775 is 57789952.

It is not a de Polignac number, because 25998775 - 2³ = 25998767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46996 + ... + 47545.

It is an arithmetic number, because the mean of its divisors is an integer number (2930802).

Almost surely, 2^25998775 is an apocalyptic number.

25998775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25998775 is a deficient number, since it is larger than the sum of its proper divisors (9170849).

25998775 is a wasteful number, since it uses less digits than its factorization.

25998775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94562 (or 94557 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 52.

The square root of 25998775 is about 5098.8993910451. The cubic root of 25998775 is about 296.2449541296.

It can be divided in two parts, 259987 and 75, that added together give a palindrome (260062).

The spelling of 25998775 in words is "twenty-five million, nine hundred ninety-eight thousand, seven hundred seventy-five".