25996164 has 48 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 8213920.

The previous prime is 25996133. The next prime is 25996169. The reversal of 25996164 is 46169952.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25996169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35797 + ... + 36515.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^25996164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25996164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

25996164 is an abundant number, since it is smaller than the sum of its proper divisors (37870716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25996164 is a wasteful number, since it uses less digits than its factorization.

25996164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 878 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 25996164 is about 5098.6433489704. The cubic root of 25996164 is about 296.2350367204.

The spelling of 25996164 in words is "twenty-five million, nine hundred ninety-six thousand, one hundred sixty-four".