25618032 has 120 divisors (see below), whose sum is σ = 81244800. Its totient is φ = 7750080.

The previous prime is 25617983. The next prime is 25618037. The reversal of 25618032 is 23081652.

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

It is a junction number, because it is equal to n+sod(n) for n = 25617987 and 25618005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25618037) 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, 42469 + ... + 43067.

It is an arithmetic number, because the mean of its divisors is an integer number (677040).

Almost surely, 2^25618032 is an apocalyptic number.

25618032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25618032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40622400).

25618032 is an abundant number, since it is smaller than the sum of its proper divisors (55626768).

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

25618032 is a wasteful number, since it uses less digits than its factorization.

25618032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25618032 is about 5061.4258860523. The cubic root of 25618032 is about 294.7917020420.

Adding to 25618032 its reverse (23081652), we get a palindrome (48699684).

The spelling of 25618032 in words is "twenty-five million, six hundred eighteen thousand, thirty-two".