25750081 has 4 divisors (see below), whose sum is σ = 29428672. Its totient is φ = 22071492.

The previous prime is 25750069. The next prime is 25750097. The reversal of 25750081 is 18005752.

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 a de Polignac number, because none of the positive numbers 2^k-25750081 is a prime.

It is a super-2 number, since 2×25750081² = 1326133343013122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25754081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1839285 + ... + 1839298.

It is an arithmetic number, because the mean of its divisors is an integer number (7357168).

Almost surely, 2^25750081 is an apocalyptic number.

It is an amenable number.

25750081 is a deficient number, since it is larger than the sum of its proper divisors (3678591).

25750081 is an equidigital number, since it uses as much as digits as its factorization.

25750081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678590.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 25750081 is about 5074.4537637070. The cubic root of 25750081 is about 295.2973388127.

The spelling of 25750081 in words is "twenty-five million, seven hundred fifty thousand, eighty-one".