425264647 has 2 divisors, whose sum is σ = 425264648. Its totient is φ = 425264646.

The previous prime is 425264617. The next prime is 425264657. The reversal of 425264647 is 746462524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425264647 - 2²³ = 416876039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425264617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212632323 + 212632324.

It is an arithmetic number, because the mean of its divisors is an integer number (212632324).

Almost surely, 2^425264647 is an apocalyptic number.

425264647 is a deficient number, since it is larger than the sum of its proper divisors (1).

425264647 is an equidigital number, since it uses as much as digits as its factorization.

425264647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 40.

The square root of 425264647 is about 20621.9457617365. The cubic root of 425264647 is about 752.0033238639.

The spelling of 425264647 in words is "four hundred twenty-five million, two hundred sixty-four thousand, six hundred forty-seven".