425642207 has 2 divisors, whose sum is σ = 425642208. Its totient is φ = 425642206.

The previous prime is 425642171. The next prime is 425642213. The reversal of 425642207 is 702246524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425642207 - 2⁶ = 425642143 is a prime.

It is equal to p_22628930 and since 425642207 and 22628930 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425642267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212821103 + 212821104.

It is an arithmetic number, because the mean of its divisors is an integer number (212821104).

Almost surely, 2^425642207 is an apocalyptic number.

425642207 is a deficient number, since it is larger than the sum of its proper divisors (1).

425642207 is an equidigital number, since it uses as much as digits as its factorization.

425642207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 425642207 is about 20631.0980560900. The cubic root of 425642207 is about 752.2258068071.

The spelling of 425642207 in words is "four hundred twenty-five million, six hundred forty-two thousand, two hundred seven".