25720774 has 4 divisors (see below), whose sum is σ = 38581164. Its totient is φ = 12860386.

The previous prime is 25720771. The next prime is 25720777. The reversal of 25720774 is 47702752.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25720771) and next prime (25720777).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25720771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430192 + ... + 6430195.

It is an arithmetic number, because the mean of its divisors is an integer number (9645291).

Almost surely, 2^25720774 is an apocalyptic number.

25720774 is a deficient number, since it is larger than the sum of its proper divisors (12860390).

25720774 is a wasteful number, since it uses less digits than its factorization.

25720774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12860389.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 25720774 is about 5071.5652416192. The cubic root of 25720774 is about 295.1852671339.

The spelling of 25720774 in words is "twenty-five million, seven hundred twenty thousand, seven hundred seventy-four".