25227931 has 2 divisors, whose sum is σ = 25227932. Its totient is φ = 25227930.

The previous prime is 25227929. The next prime is 25227967. The reversal of 25227931 is 13972252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25227931 - 2¹ = 25227929 is a prime.

It is a super-2 number, since 2×25227931² = 1272897005081522, which contains 22 as substring.

Together with 25227929, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25227893 and 25227902.

It is not a weakly prime, because it can be changed into another prime (25227131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613965 + 12613966.

It is an arithmetic number, because the mean of its divisors is an integer number (12613966).

Almost surely, 2^25227931 is an apocalyptic number.

25227931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25227931 is an equidigital number, since it uses as much as digits as its factorization.

25227931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 25227931 is about 5022.7413829502. The cubic root of 25227931 is about 293.2877191756.

The spelling of 25227931 in words is "twenty-five million, two hundred twenty-seven thousand, nine hundred thirty-one".