25720312 has 8 divisors (see below), whose sum is σ = 48225600. Its totient is φ = 12860152.

The previous prime is 25720307. The next prime is 25720313. The reversal of 25720312 is 21302752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25720313) 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, 1607512 + ... + 1607527.

It is an arithmetic number, because the mean of its divisors is an integer number (6028200).

Almost surely, 2^25720312 is an apocalyptic number.

It is an amenable number.

25720312 is a deficient number, since it is larger than the sum of its proper divisors (22505288).

25720312 is a wasteful number, since it uses less digits than its factorization.

25720312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215045 (or 3215041 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25720312 is about 5071.5196933464. The cubic root of 25720312 is about 295.1834997375.

The spelling of 25720312 in words is "twenty-five million, seven hundred twenty thousand, three hundred twelve".