25433131 has 2 divisors, whose sum is σ = 25433132. Its totient is φ = 25433130.

The previous prime is 25433129. The next prime is 25433141. The reversal of 25433131 is 13133452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25433131 - 2¹ = 25433129 is a prime.

It is a super-2 number, since 2×25433131² = 1293688304926322, which contains 22 as substring.

Together with 25433129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25433141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12716565 + 12716566.

It is an arithmetic number, because the mean of its divisors is an integer number (12716566).

Almost surely, 2^25433131 is an apocalyptic number.

25433131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25433131 is an equidigital number, since it uses as much as digits as its factorization.

25433131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 22.

The square root of 25433131 is about 5043.1271052790. The cubic root of 25433131 is about 294.0807581994.

Adding to 25433131 its reverse (13133452), we get a palindrome (38566583).

The spelling of 25433131 in words is "twenty-five million, four hundred thirty-three thousand, one hundred thirty-one".