25223131 has 4 divisors (see below), whose sum is σ = 25239600. Its totient is φ = 25206664.

The previous prime is 25223129. The next prime is 25223141. The reversal of 25223131 is 13132252.

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 25223131 - 2¹ = 25223129 is a prime.

It is a super-2 number, since 2×25223131² = 1272412674886322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25223099 and 25223108.

It is not an unprimeable number, because it can be changed into a prime (25223101) 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, 5671 + ... + 9088.

It is an arithmetic number, because the mean of its divisors is an integer number (6309900).

Almost surely, 2^25223131 is an apocalyptic number.

25223131 is a deficient number, since it is larger than the sum of its proper divisors (16469).

25223131 is a wasteful number, since it uses less digits than its factorization.

25223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16468.

The product of its digits is 360, while the sum is 19.

The square root of 25223131 is about 5022.2635335076. The cubic root of 25223131 is about 293.2691171699.

Adding to 25223131 its reverse (13132252), we get a palindrome (38355383).

The spelling of 25223131 in words is "twenty-five million, two hundred twenty-three thousand, one hundred thirty-one".