25998951 has 16 divisors (see below), whose sum is σ = 38188800. Its totient is φ = 15601920.

The previous prime is 25998949. The next prime is 25998953. The reversal of 25998951 is 15989952.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25998949) and next prime (25998953).

It is not a de Polignac number, because 25998951 - 2¹ = 25998949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25998951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25998953) 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, 426 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (2386800).

Almost surely, 2^25998951 is an apocalyptic number.

25998951 is a deficient number, since it is larger than the sum of its proper divisors (12189849).

25998951 is a wasteful number, since it uses less digits than its factorization.

25998951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766.

The product of its digits is 291600, while the sum is 48.

The square root of 25998951 is about 5098.9166496424. The cubic root of 25998951 is about 296.2456226097.

The spelling of 25998951 in words is "twenty-five million, nine hundred ninety-eight thousand, nine hundred fifty-one".