425667587 has 2 divisors, whose sum is σ = 425667588. Its totient is φ = 425667586.

The previous prime is 425667581. The next prime is 425667611. The reversal of 425667587 is 785766524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425667587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425667581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212833793 + 212833794.

It is an arithmetic number, because the mean of its divisors is an integer number (212833794).

Almost surely, 2^425667587 is an apocalyptic number.

425667587 is a deficient number, since it is larger than the sum of its proper divisors (1).

425667587 is an equidigital number, since it uses as much as digits as its factorization.

425667587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 50.

The square root of 425667587 is about 20631.7131377886. The cubic root of 425667587 is about 752.2407576361.

The spelling of 425667587 in words is "four hundred twenty-five million, six hundred sixty-seven thousand, five hundred eighty-seven".