25313730 has 64 divisors (see below), whose sum is σ = 66866688. Its totient is φ = 6094080.

The previous prime is 25313711. The next prime is 25313741. The reversal of 25313730 is 3731352.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25313730.

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, 17640 + ... + 19020.

It is an arithmetic number, because the mean of its divisors is an integer number (1044792).

Almost surely, 2^25313730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25313730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33433344).

25313730 is an abundant number, since it is smaller than the sum of its proper divisors (41552958).

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

25313730 is a wasteful number, since it uses less digits than its factorization.

25313730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 25313730 is about 5031.2751862724. The cubic root of 25313730 is about 293.6198288498.

The spelling of 25313730 in words is "twenty-five million, three hundred thirteen thousand, seven hundred thirty".