25330091 has 4 divisors (see below), whose sum is σ = 25363800. Its totient is φ = 25296384.

The previous prime is 25330073. The next prime is 25330103. The reversal of 25330091 is 19003352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25330091 - 2⁶ = 25330027 is a prime.

It is a super-2 number, since 2×25330091² = 1283227020136562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25330001) 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, 15701 + ... + 17238.

It is an arithmetic number, because the mean of its divisors is an integer number (6340950).

Almost surely, 2^25330091 is an apocalyptic number.

25330091 is a deficient number, since it is larger than the sum of its proper divisors (33709).

25330091 is an equidigital number, since it uses as much as digits as its factorization.

25330091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33708.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 25330091 is about 5032.9008533847. The cubic root of 25330091 is about 293.6830735715.

The spelling of 25330091 in words is "twenty-five million, three hundred thirty thousand, ninety-one".