25358891 has 4 divisors (see below), whose sum is σ = 25472832. Its totient is φ = 25244952.

The previous prime is 25358867. The next prime is 25358911. The reversal of 25358891 is 19885352.

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 25358891 - 2¹⁰ = 25357867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25358821) 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, 56636 + ... + 57081.

It is an arithmetic number, because the mean of its divisors is an integer number (6368208).

Almost surely, 2^25358891 is an apocalyptic number.

25358891 is a deficient number, since it is larger than the sum of its proper divisors (113941).

25358891 is a wasteful number, since it uses less digits than its factorization.

25358891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113940.

The product of its digits is 86400, while the sum is 41.

The square root of 25358891 is about 5035.7612135605. The cubic root of 25358891 is about 293.7943360875.

The spelling of 25358891 in words is "twenty-five million, three hundred fifty-eight thousand, eight hundred ninety-one".