25323031 has 4 divisors (see below), whose sum is σ = 25337272. Its totient is φ = 25308792.

The previous prime is 25323007. The next prime is 25323037. The reversal of 25323031 is 13032352.

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 25323031 - 2¹¹ = 25320983 is a prime.

It is a super-2 number, since 2×25323031² = 1282511798053922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25323037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3996 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (6334318).

Almost surely, 2^25323031 is an apocalyptic number.

25323031 is a deficient number, since it is larger than the sum of its proper divisors (14241).

25323031 is a wasteful number, since it uses less digits than its factorization.

25323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14240.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 25323031 is about 5032.1994197369. The cubic root of 25323031 is about 293.6557859321.

Adding to 25323031 its reverse (13032352), we get a palindrome (38355383).

The spelling of 25323031 in words is "twenty-five million, three hundred twenty-three thousand, thirty-one".