25981446 has 8 divisors (see below), whose sum is σ = 51962904. Its totient is φ = 8660480.

The previous prime is 25981429. The next prime is 25981447. The reversal of 25981446 is 64418952.

It is a sphenic number, since it is the product of 3 distinct primes.

25981446 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25981447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2165115 + ... + 2165126.

It is an arithmetic number, because the mean of its divisors is an integer number (6495363).

Almost surely, 2^25981446 is an apocalyptic number.

25981446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25981446 is a wasteful number, since it uses less digits than its factorization.

25981446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330246.

The product of its digits is 69120, while the sum is 39.

The square root of 25981446 is about 5097.1998195087. The cubic root of 25981446 is about 296.1791206457.

The spelling of 25981446 in words is "twenty-five million, nine hundred eighty-one thousand, four hundred forty-six".