25750813 has 4 divisors (see below), whose sum is σ = 28091808. Its totient is φ = 23409820.

The previous prime is 25750793. The next prime is 25750831. The reversal of 25750813 is 31805752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25750813 - 2¹³ = 25742621 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25750883) 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 3 ways as a sum of consecutive naturals, for example, 1170481 + ... + 1170502.

It is an arithmetic number, because the mean of its divisors is an integer number (7022952).

Almost surely, 2^25750813 is an apocalyptic number.

It is an amenable number.

25750813 is a deficient number, since it is larger than the sum of its proper divisors (2340995).

25750813 is a wasteful number, since it uses less digits than its factorization.

25750813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340994.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25750813 is about 5074.5258891841. The cubic root of 25750813 is about 295.3001369347.

The spelling of 25750813 in words is "twenty-five million, seven hundred fifty thousand, eight hundred thirteen".