25940736 has 126 divisors (see below), whose sum is σ = 78193220. Its totient is φ = 8584704.

The previous prime is 25940731. The next prime is 25940749. The reversal of 25940736 is 63704952.

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

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 25940736.

It is not an unprimeable number, because it can be changed into a prime (25940731) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 186555 + ... + 186693.

Almost surely, 2^25940736 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 25940736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39096610).

25940736 is an abundant number, since it is smaller than the sum of its proper divisors (52252484).

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

25940736 is an frugal number, since it uses more digits than its factorization.

25940736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 25940736 is about 5093.2048849423. The cubic root of 25940736 is about 296.0243466704.

The spelling of 25940736 in words is "twenty-five million, nine hundred forty thousand, seven hundred thirty-six".