25321331 has 8 divisors (see below), whose sum is σ = 28971360. Its totient is φ = 21679488.

The previous prime is 25321277. The next prime is 25321337. The reversal of 25321331 is 13312352.

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 25321331 - 2¹⁴ = 25304947 is a prime.

It is a super-2 number, since 2×25321331² = 1282339607223122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25321337) 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, 7685 + ... + 10473.

It is an arithmetic number, because the mean of its divisors is an integer number (3621420).

Almost surely, 2^25321331 is an apocalyptic number.

25321331 is a deficient number, since it is larger than the sum of its proper divisors (3650029).

25321331 is a wasteful number, since it uses less digits than its factorization.

25321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093.

The product of its digits is 540, while the sum is 20.

The square root of 25321331 is about 5032.0305046770. The cubic root of 25321331 is about 293.6492144965.

Adding to 25321331 its reverse (13312352), we get a palindrome (38633683).

It can be divided in two parts, 25321 and 331, that added together give a palindrome (25652).

The spelling of 25321331 in words is "twenty-five million, three hundred twenty-one thousand, three hundred thirty-one".