25450231 has 2 divisors, whose sum is σ = 25450232. Its totient is φ = 25450230.

The previous prime is 25450223. The next prime is 25450277. The reversal of 25450231 is 13205452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25450231 - 2³ = 25450223 is a prime.

It is a super-2 number, since 2×25450231² = 1295428515906722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25450211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12725115 + 12725116.

It is an arithmetic number, because the mean of its divisors is an integer number (12725116).

Almost surely, 2^25450231 is an apocalyptic number.

25450231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25450231 is an equidigital number, since it uses as much as digits as its factorization.

25450231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25450231 is about 5044.8221970650. The cubic root of 25450231 is about 294.1466519654.

Adding to 25450231 its reverse (13205452), we get a palindrome (38655683).

The spelling of 25450231 in words is "twenty-five million, four hundred fifty thousand, two hundred thirty-one".