25725942 has 48 divisors (see below), whose sum is σ = 62309520. Its totient is φ = 7603200.

The previous prime is 25725907. The next prime is 25725961. The reversal of 25725942 is 24952752.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25725897 and 25725906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6534 + ... + 9702.

It is an arithmetic number, because the mean of its divisors is an integer number (1298115).

Almost surely, 2^25725942 is an apocalyptic number.

25725942 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 25725942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31154760).

25725942 is an abundant number, since it is smaller than the sum of its proper divisors (36583578).

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

25725942 is a wasteful number, since it uses less digits than its factorization.

25725942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229 (or 3226 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 25725942 is about 5072.0747234243. The cubic root of 25725942 is about 295.2050360478.

The spelling of 25725942 in words is "twenty-five million, seven hundred twenty-five thousand, nine hundred forty-two".