25720466 has 8 divisors (see below), whose sum is σ = 39014460. Its totient is φ = 12715648.

The previous prime is 25720459. The next prime is 25720469. The reversal of 25720466 is 66402752.

It can be written as a sum of positive squares in 2 ways, for example, as 19545241 + 6175225 = 4421^2 + 2485^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25720469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72071 + ... + 72426.

Almost surely, 2^25720466 is an apocalyptic number.

25720466 is a deficient number, since it is larger than the sum of its proper divisors (13293994).

25720466 is a wasteful number, since it uses less digits than its factorization.

25720466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144588.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 25720466 is about 5071.5348761494. The cubic root of 25720466 is about 295.1840888720.

The spelling of 25720466 in words is "twenty-five million, seven hundred twenty thousand, four hundred sixty-six".