25617852 has 144 divisors (see below), whose sum is σ = 76236160. Its totient is φ = 7185024.

The previous prime is 25617829. The next prime is 25617853. The reversal of 25617852 is 25871652.

It is a happy number.

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 (25617853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382323 + ... + 382389.

Almost surely, 2^25617852 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 25617852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38118080).

25617852 is an abundant number, since it is smaller than the sum of its proper divisors (50618308).

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

25617852 is a wasteful number, since it uses less digits than its factorization.

25617852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 147 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 25617852 is about 5061.4081044705. The cubic root of 25617852 is about 294.7910116087.

The spelling of 25617852 in words is "twenty-five million, six hundred seventeen thousand, eight hundred fifty-two".