25602012 has 72 divisors (see below), whose sum is σ = 67813200. Its totient is φ = 8133888.

The previous prime is 25601977. The next prime is 25602019. The reversal of 25602012 is 21020652.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25602019) 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, 142939 + ... + 143117.

It is an arithmetic number, because the mean of its divisors is an integer number (941850).

Almost surely, 2^25602012 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 25602012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33906600).

25602012 is an abundant number, since it is smaller than the sum of its proper divisors (42211188).

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

25602012 is a wasteful number, since it uses less digits than its factorization.

25602012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25602012 is about 5059.8430805708. The cubic root of 25602012 is about 294.7302408050.

Adding to 25602012 its reverse (21020652), we get a palindrome (46622664).

The spelling of 25602012 in words is "twenty-five million, six hundred two thousand, twelve".