25350431 has 2 divisors, whose sum is σ = 25350432. Its totient is φ = 25350430.

The previous prime is 25350419. The next prime is 25350449. The reversal of 25350431 is 13405352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25350431 - 2²² = 21156127 is a prime.

It is a super-2 number, since 2×25350431² = 1285288703771522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25350397 and 25350406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25350401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12675215 + 12675216.

It is an arithmetic number, because the mean of its divisors is an integer number (12675216).

Almost surely, 2^25350431 is an apocalyptic number.

25350431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25350431 is an equidigital number, since it uses as much as digits as its factorization.

25350431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 25350431 is about 5034.9211513191. The cubic root of 25350431 is about 293.7616614655.

Adding to 25350431 its reverse (13405352), we get a palindrome (38755783).

The spelling of 25350431 in words is "twenty-five million, three hundred fifty thousand, four hundred thirty-one".