25365630 has 64 divisors (see below), whose sum is σ = 62995968. Its totient is φ = 6533760.

The previous prime is 25365629. The next prime is 25365677. The reversal of 25365630 is 3656352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151807 + ... + 151973.

It is an arithmetic number, because the mean of its divisors is an integer number (984312).

Almost surely, 2^25365630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25365630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31497984).

25365630 is an abundant number, since it is smaller than the sum of its proper divisors (37630338).

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

25365630 is a wasteful number, since it uses less digits than its factorization.

25365630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 25365630 is about 5036.4302834448. The cubic root of 25365630 is about 293.8203585803.

The spelling of 25365630 in words is "twenty-five million, three hundred sixty-five thousand, six hundred thirty".