25105782 has 32 divisors (see below), whose sum is σ = 55103328. Its totient is φ = 7577856.

The previous prime is 25105781. The next prime is 25105789. The reversal of 25105782 is 28750152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1098 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (1721979).

Almost surely, 2^25105782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25105782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27551664).

25105782 is an abundant number, since it is smaller than the sum of its proper divisors (29997546).

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

25105782 is a wasteful number, since it uses less digits than its factorization.

25105782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6144.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25105782 is about 5010.5670337797. The cubic root of 25105782 is about 292.8136047681.

The spelling of 25105782 in words is "twenty-five million, one hundred five thousand, seven hundred eighty-two".