25720027 has 8 divisors (see below), whose sum is σ = 26364416. Its totient is φ = 25083432.

The previous prime is 25720007. The next prime is 25720039. The reversal of 25720027 is 72002752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25720027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25719983 and 25720010.

It is not an unprimeable number, because it can be changed into a prime (25720007) 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 in 7 ways as a sum of consecutive naturals, for example, 5038 + ... + 8764.

It is an arithmetic number, because the mean of its divisors is an integer number (3295552).

Almost surely, 2^25720027 is an apocalyptic number.

25720027 is a deficient number, since it is larger than the sum of its proper divisors (644389).

25720027 is a wasteful number, since it uses less digits than its factorization.

25720027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 25720027 is about 5071.4915951818. The cubic root of 25720027 is about 295.1824094499.

Adding to 25720027 its reverse (72002752), we get a palindrome (97722779).

The spelling of 25720027 in words is "twenty-five million, seven hundred twenty thousand, twenty-seven".