25225236 has 72 divisors (see below), whose sum is σ = 69128640. Its totient is φ = 7953552.

The previous prime is 25225201. The next prime is 25225237. The reversal of 25225236 is 63252252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25225237) 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, 38665 + ... + 39311.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 2^25225236 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 25225236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34564320).

25225236 is an abundant number, since it is smaller than the sum of its proper divisors (43903404).

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

25225236 is a wasteful number, since it uses less digits than its factorization.

25225236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 671 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 25225236 is about 5022.4730959956. The cubic root of 25225236 is about 293.2772752150.

Adding to 25225236 its reverse (63252252), we get a palindrome (88477488).

The spelling of 25225236 in words is "twenty-five million, two hundred twenty-five thousand, two hundred thirty-six".