25420007 has 2 divisors, whose sum is σ = 25420008. Its totient is φ = 25420006.

The previous prime is 25419971. The next prime is 25420033. The reversal of 25420007 is 70002452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25420007 - 2⁶ = 25419943 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25425007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710003 + 12710004.

It is an arithmetic number, because the mean of its divisors is an integer number (12710004).

Almost surely, 2^25420007 is an apocalyptic number.

25420007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25420007 is an equidigital number, since it uses as much as digits as its factorization.

25420007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 25420007 is about 5041.8257605752. The cubic root of 25420007 is about 294.0301656616.

Adding to 25420007 its reverse (70002452), we get a palindrome (95422459).

The spelling of 25420007 in words is "twenty-five million, four hundred twenty thousand, seven".