425717249851 has 2 divisors, whose sum is σ = 425717249852. Its totient is φ = 425717249850.

The previous prime is 425717249807. The next prime is 425717249857. The reversal of 425717249851 is 158942717524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425717249851 - 2¹³ = 425717241659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425717249792 and 425717249801.

It is not a weakly prime, because it can be changed into another prime (425717249857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212858624925 + 212858624926.

It is an arithmetic number, because the mean of its divisors is an integer number (212858624926).

Almost surely, 2^425717249851 is an apocalyptic number.

425717249851 is a deficient number, since it is larger than the sum of its proper divisors (1).

425717249851 is an equidigital number, since it uses as much as digits as its factorization.

425717249851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 55.

The spelling of 425717249851 in words is "four hundred twenty-five billion, seven hundred seventeen million, two hundred forty-nine thousand, eight hundred fifty-one".