25642303307 has 2 divisors, whose sum is σ = 25642303308. Its totient is φ = 25642303306.

The previous prime is 25642303213. The next prime is 25642303333. The reversal of 25642303307 is 70330324652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25642303307 - 2⁸ = 25642303051 is a prime.

It is not a weakly prime, because it can be changed into another prime (25642303507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12821151653 + 12821151654.

It is an arithmetic number, because the mean of its divisors is an integer number (12821151654).

Almost surely, 2^25642303307 is an apocalyptic number.

25642303307 is a deficient number, since it is larger than the sum of its proper divisors (1).

25642303307 is an equidigital number, since it uses as much as digits as its factorization.

25642303307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 35.

Adding to 25642303307 its reverse (70330324652), we get a palindrome (95972627959).

The spelling of 25642303307 in words is "twenty-five billion, six hundred forty-two million, three hundred three thousand, three hundred seven".