25634772 has 48 divisors (see below), whose sum is σ = 67173120. Its totient is φ = 8453376.

The previous prime is 25634771. The next prime is 25634773. The reversal of 25634772 is 27743652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25634771) and next prime (25634773).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25634771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9253 + ... + 11699.

It is an arithmetic number, because the mean of its divisors is an integer number (1399440).

Almost surely, 2^25634772 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 25634772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33586560).

25634772 is an abundant number, since it is smaller than the sum of its proper divisors (41538348).

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

25634772 is a wasteful number, since it uses less digits than its factorization.

25634772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2549 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 25634772 is about 5063.0793001888. The cubic root of 25634772 is about 294.8558982119.

The spelling of 25634772 in words is "twenty-five million, six hundred thirty-four thousand, seven hundred seventy-two".