25993242 has 72 divisors (see below), whose sum is σ = 63786528. Its totient is φ = 7585200.

The previous prime is 25993241. The next prime is 25993249. The reversal of 25993242 is 24239952.

It is a junction number, because it is equal to n+sod(n) for n = 25993197 and 25993206.

It is not an unprimeable number, because it can be changed into a prime (25993241) 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, 366067 + ... + 366137.

It is an arithmetic number, because the mean of its divisors is an integer number (885924).

Almost surely, 2^25993242 is an apocalyptic number.

25993242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25993242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31893264).

25993242 is an abundant number, since it is smaller than the sum of its proper divisors (37793286).

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

25993242 is a wasteful number, since it uses less digits than its factorization.

25993242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 130 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 25993242 is about 5098.3567941053. The cubic root of 25993242 is about 296.2239372468.

The spelling of 25993242 in words is "twenty-five million, nine hundred ninety-three thousand, two hundred forty-two".