25342506 has 72 divisors (see below), whose sum is σ = 65089440. Its totient is φ = 7103376.

The previous prime is 25342501. The next prime is 25342519. The reversal of 25342506 is 60524352.

It is a super-2 number, since 2×25342506² = 1284485220720072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25342506.

It is not an unprimeable number, because it can be changed into a prime (25342501) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51795 + ... + 52281.

It is an arithmetic number, because the mean of its divisors is an integer number (904020).

Almost surely, 2^25342506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25342506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32544720).

25342506 is an abundant number, since it is smaller than the sum of its proper divisors (39746934).

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

25342506 is a wasteful number, since it uses less digits than its factorization.

25342506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 558 counting only the distinct ones).

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

The square root of 25342506 is about 5034.1340864145. The cubic root of 25342506 is about 293.7310465514.

Adding to 25342506 its reverse (60524352), we get a palindrome (85866858).

The spelling of 25342506 in words is "twenty-five million, three hundred forty-two thousand, five hundred six".