25723236 has 144 divisors (see below), whose sum is σ = 78829632. Its totient is φ = 6451200.

The previous prime is 25723219. The next prime is 25723253. The reversal of 25723236 is 63232752.

It is an interprime number because it is at equal distance from previous prime (25723219) and next prime (25723253).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 265140 + ... + 265236.

It is an arithmetic number, because the mean of its divisors is an integer number (547428).

Almost surely, 2^25723236 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 25723236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39414816).

25723236 is an abundant number, since it is smaller than the sum of its proper divisors (53106396).

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

25723236 is a wasteful number, since it uses less digits than its factorization.

25723236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 161 counting only the distinct ones).

The product of its digits is 15120, while the sum is 30.

The square root of 25723236 is about 5071.8079616642. The cubic root of 25723236 is about 295.1946852401.

Adding to 25723236 its reverse (63232752), we get a palindrome (88955988).

The spelling of 25723236 in words is "twenty-five million, seven hundred twenty-three thousand, two hundred thirty-six".