25670 has 16 divisors (see below), whose sum is σ = 49248. Its totient is φ = 9600.

The previous prime is 25667. The next prime is 25673. The reversal of 25670 is 7652.

25670 is nontrivially palindromic in base 16.

25670 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

25670 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (25667) and next prime (25673).

It is an alternating number because its digits alternate between even and odd.

25670 is an undulating number in base 13.

25670 is strictly pandigital in base 6.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95 + ... + 245.

It is an arithmetic number, because the mean of its divisors is an integer number (3078).

2²⁵⁶⁷⁰ is an apocalyptic number.

25670 is a deficient number, since it is larger than the sum of its proper divisors (23578).

25670 is a wasteful number, since it uses less digits than its factorization.

25670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 25670 is about 160.2186006680. The cubic root of 25670 is about 29.4990902717.

The spelling of 25670 in words is "twenty-five thousand, six hundred seventy".