425798251687 has 2 divisors, whose sum is σ = 425798251688. Its totient is φ = 425798251686.

The previous prime is 425798251679. The next prime is 425798251717. The reversal of 425798251687 is 786152897524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425798251687 - 2³ = 425798251679 is a prime.

It is a super-2 number, since 2×425798251687² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425798251987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212899125843 + 212899125844.

It is an arithmetic number, because the mean of its divisors is an integer number (212899125844).

Almost surely, 2^425798251687 is an apocalyptic number.

425798251687 is a deficient number, since it is larger than the sum of its proper divisors (1).

425798251687 is an equidigital number, since it uses as much as digits as its factorization.

425798251687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67737600, while the sum is 64.

The spelling of 425798251687 in words is "four hundred twenty-five billion, seven hundred ninety-eight million, two hundred fifty-one thousand, six hundred eighty-seven".