25689134 has 4 divisors (see below), whose sum is σ = 38533704. Its totient is φ = 12844566.

The previous prime is 25689107. The next prime is 25689143. The reversal of 25689134 is 43198652.

It is a happy number.

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

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6422282 + ... + 6422285.

It is an arithmetic number, because the mean of its divisors is an integer number (9633426).

Almost surely, 2^25689134 is an apocalyptic number.

25689134 is a deficient number, since it is larger than the sum of its proper divisors (12844570).

25689134 is a wasteful number, since it uses less digits than its factorization.

25689134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12844569.

The product of its digits is 51840, while the sum is 38.

The square root of 25689134 is about 5068.4449291671. Note that the first 3 decimals coincide. The cubic root of 25689134 is about 295.0641783187.

The spelling of 25689134 in words is "twenty-five million, six hundred eighty-nine thousand, one hundred thirty-four".