25889967 has 12 divisors (see below), whose sum is σ = 38031240. Its totient is φ = 16967088.

The previous prime is 25889933. The next prime is 25889987. The reversal of 25889967 is 76998852.

It is a happy number.

It is not a de Polignac number, because 25889967 - 2¹¹ = 25887919 is a prime.

It is a super-2 number, since 2×25889967² = 1340580782522178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25889987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23848 + ... + 24909.

It is an arithmetic number, because the mean of its divisors is an integer number (3169270).

Almost surely, 2^25889967 is an apocalyptic number.

25889967 is a deficient number, since it is larger than the sum of its proper divisors (12141273).

25889967 is a wasteful number, since it uses less digits than its factorization.

25889967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48822 (or 48819 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 25889967 is about 5088.2184504992. The cubic root of 25889967 is about 295.8311026656.

The spelling of 25889967 in words is "twenty-five million, eight hundred eighty-nine thousand, nine hundred sixty-seven".