25813066 has 8 divisors (see below), whose sum is σ = 38741220. Its totient is φ = 12899328.

The previous prime is 25813063. The next prime is 25813079. The reversal of 25813066 is 66031852.

It can be written as a sum of positive squares in 2 ways, for example, as 24950025 + 863041 = 4995^2 + 929^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25813063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4720 + ... + 8596.

Almost surely, 2^25813066 is an apocalyptic number.

25813066 is a deficient number, since it is larger than the sum of its proper divisors (12928154).

25813066 is a wasteful number, since it uses less digits than its factorization.

25813066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25813066 is about 5080.6560599986. The cubic root of 25813066 is about 295.5379096904.

The spelling of 25813066 in words is "twenty-five million, eight hundred thirteen thousand, sixty-six".