25530736 has 160 divisors (see below), whose sum is σ = 69424128. Its totient is φ = 8785920.

The previous prime is 25530733. The next prime is 25530749. The reversal of 25530736 is 63703552.

It is a junction number, because it is equal to n+sod(n) for n = 25530698 and 25530707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481686 + ... + 481738.

Almost surely, 2^25530736 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 25530736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34712064).

25530736 is an abundant number, since it is smaller than the sum of its proper divisors (43893392).

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

25530736 is a wasteful number, since it uses less digits than its factorization.

25530736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 25530736 is about 5052.7948701684. The cubic root of 25530736 is about 294.4564769367.

The spelling of 25530736 in words is "twenty-five million, five hundred thirty thousand, seven hundred thirty-six".