84425591251 has 2 divisors, whose sum is σ = 84425591252. Its totient is φ = 84425591250.

The previous prime is 84425591231. The next prime is 84425591279. The reversal of 84425591251 is 15219552448.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84425591251 - 2¹³ = 84425583059 is a prime.

It is not a weakly prime, because it can be changed into another prime (84425591231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42212795625 + 42212795626.

It is an arithmetic number, because the mean of its divisors is an integer number (42212795626).

Almost surely, 2^84425591251 is an apocalyptic number.

84425591251 is a deficient number, since it is larger than the sum of its proper divisors (1).

84425591251 is an equidigital number, since it uses as much as digits as its factorization.

84425591251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576000, while the sum is 46.

The spelling of 84425591251 in words is "eighty-four billion, four hundred twenty-five million, five hundred ninety-one thousand, two hundred fifty-one".