25980444 has 72 divisors (see below), whose sum is σ = 75723648. Its totient is φ = 7356960.

The previous prime is 25980439. The next prime is 25980457. The reversal of 25980444 is 44408952.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25980399 and 25980408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32619 + ... + 33405.

Almost surely, 2^25980444 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 25980444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37861824).

25980444 is an abundant number, since it is smaller than the sum of its proper divisors (49743204).

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

25980444 is a wasteful number, since it uses less digits than its factorization.

25980444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 25980444 is about 5097.1015293007. The cubic root of 25980444 is about 296.1753131171.

The spelling of 25980444 in words is "twenty-five million, nine hundred eighty thousand, four hundred forty-four".