25930645 has 8 divisors (see below), whose sum is σ = 33510456. Its totient is φ = 19148736.

The previous prime is 25930643. The next prime is 25930651. The reversal of 25930645 is 54603952.

It can be written as a sum of positive squares in 4 ways, for example, as 438244 + 25492401 = 662^2 + 5049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25930645 - 2¹ = 25930643 is a prime.

It is a super-3 number, since 3×25930645³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25930645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25930643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199402 + ... + 199531.

It is an arithmetic number, because the mean of its divisors is an integer number (4188807).

Almost surely, 2^25930645 is an apocalyptic number.

It is an amenable number.

25930645 is a deficient number, since it is larger than the sum of its proper divisors (7579811).

25930645 is a wasteful number, since it uses less digits than its factorization.

25930645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398951.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 25930645 is about 5092.2141549625. The cubic root of 25930645 is about 295.9859569975.

The spelling of 25930645 in words is "twenty-five million, nine hundred thirty thousand, six hundred forty-five".