251228490482 has 6 divisors (see below), whose sum is σ = 376843798989. Its totient is φ = 125613890820.

The previous prime is 251228490467. The next prime is 251228490493. The reversal of 251228490482 is 284094822152.

It can be written as a sum of positive squares in 2 ways, for example, as 207417395761 + 43811094721 = 455431^2 + 209311^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=354421.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 531632 + ... + 886052.

Almost surely, 2^251228490482 is an apocalyptic number.

251228490482 is a deficient number, since it is larger than the sum of its proper divisors (125615308507).

251228490482 is an frugal number, since it uses more digits than its factorization.

251228490482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708844 (or 354423 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 251228490482 in words is "two hundred fifty-one billion, two hundred twenty-eight million, four hundred ninety thousand, four hundred eighty-two".