25819236 has 72 divisors (see below), whose sum is σ = 68612544. Its totient is φ = 8488800.

The previous prime is 25819231. The next prime is 25819237. The reversal of 25819236 is 63291852.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25819236.

It is not an unprimeable number, because it can be changed into a prime (25819231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98041 + ... + 98303.

It is an arithmetic number, because the mean of its divisors is an integer number (952952).

Almost surely, 2^25819236 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 25819236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34306272).

25819236 is an abundant number, since it is smaller than the sum of its proper divisors (42793308).

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

25819236 is a wasteful number, since it uses less digits than its factorization.

25819236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 369 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 25819236 is about 5081.2632287651. The cubic root of 25819236 is about 295.5614549192.

The spelling of 25819236 in words is "twenty-five million, eight hundred nineteen thousand, two hundred thirty-six".