25712813 has 8 divisors (see below), whose sum is σ = 29551680. Its totient is φ = 21915360.

The previous prime is 25712803. The next prime is 25712831. The reversal of 25712813 is 31821752.

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

It is a cyclic number.

It is not a de Polignac number, because 25712813 - 2⁶ = 25712749 is a prime.

It is a super-2 number, since 2×25712813² = 1322297504745938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25712803) 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 7 ways as a sum of consecutive naturals, for example, 9008 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (3693960).

Almost surely, 2^25712813 is an apocalyptic number.

It is an amenable number.

25712813 is a deficient number, since it is larger than the sum of its proper divisors (3838867).

25712813 is a wasteful number, since it uses less digits than its factorization.

25712813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20707.

The product of its digits is 3360, while the sum is 29.

The square root of 25712813 is about 5070.7803147050. The cubic root of 25712813 is about 295.1548091028.

The spelling of 25712813 in words is "twenty-five million, seven hundred twelve thousand, eight hundred thirteen".