425685427 has 2 divisors, whose sum is σ = 425685428. Its totient is φ = 425685426.

The previous prime is 425685419. The next prime is 425685437. The reversal of 425685427 is 724586524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425685427 - 2³ = 425685419 is a prime.

It is not a weakly prime, because it can be changed into another prime (425685437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212842713 + 212842714.

It is an arithmetic number, because the mean of its divisors is an integer number (212842714).

Almost surely, 2^425685427 is an apocalyptic number.

425685427 is a deficient number, since it is larger than the sum of its proper divisors (1).

425685427 is an equidigital number, since it uses as much as digits as its factorization.

425685427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 43.

The square root of 425685427 is about 20632.1454773855. The cubic root of 425685427 is about 752.2512664526.

The spelling of 425685427 in words is "four hundred twenty-five million, six hundred eighty-five thousand, four hundred twenty-seven".