25756993 has 8 divisors (see below), whose sum is σ = 26345088. Its totient is φ = 25172784.

The previous prime is 25756967. The next prime is 25757021. The reversal of 25756993 is 39965752.

It is a happy number.

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 25756993 - 2¹⁷ = 25625921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25756193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15480 + ... + 17062.

It is an arithmetic number, because the mean of its divisors is an integer number (3293136).

Almost surely, 2^25756993 is an apocalyptic number.

It is an amenable number.

25756993 is a deficient number, since it is larger than the sum of its proper divisors (588095).

25756993 is a wasteful number, since it uses less digits than its factorization.

25756993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943.

The product of its digits is 510300, while the sum is 46.

The square root of 25756993 is about 5075.1347765355. The cubic root of 25756993 is about 295.3237583103.

The spelling of 25756993 in words is "twenty-five million, seven hundred fifty-six thousand, nine hundred ninety-three".