25242031 has 2 divisors, whose sum is σ = 25242032. Its totient is φ = 25242030.

The previous prime is 25242011. The next prime is 25242037. The reversal of 25242031 is 13024252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25242031 - 2⁵ = 25241999 is a prime.

It is a super-2 number, since 2×25242031² = 1274320258009922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25242037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621015 + 12621016.

It is an arithmetic number, because the mean of its divisors is an integer number (12621016).

Almost surely, 2^25242031 is an apocalyptic number.

25242031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25242031 is an equidigital number, since it uses as much as digits as its factorization.

25242031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 25242031 is about 5024.1448028495. The cubic root of 25242031 is about 293.3423489252.

Adding to 25242031 its reverse (13024252), we get a palindrome (38266283).

The spelling of 25242031 in words is "twenty-five million, two hundred forty-two thousand, thirty-one".