25798164 has 24 divisors (see below), whose sum is σ = 68795328. Its totient is φ = 7370880.

The previous prime is 25798153. The next prime is 25798183. The reversal of 25798164 is 46189752.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153477 + ... + 153644.

It is an arithmetic number, because the mean of its divisors is an integer number (2866472).

Almost surely, 2^25798164 is an apocalyptic number.

It is an amenable number.

25798164 is an abundant number, since it is smaller than the sum of its proper divisors (42997164).

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

25798164 is a wasteful number, since it uses less digits than its factorization.

25798164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307135 (or 307133 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 25798164 is about 5079.1893053912. The cubic root of 25798164 is about 295.4810269511.

The spelling of 25798164 in words is "twenty-five million, seven hundred ninety-eight thousand, one hundred sixty-four".