7281425438 has 16 divisors (see below), whose sum is σ = 12483624960. Its totient is φ = 3120315576.

The previous prime is 7281425407. The next prime is 7281425447. The reversal of 7281425438 is 8345241827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198095 + ... + 231957.

It is an arithmetic number, because the mean of its divisors is an integer number (780226560).

Almost surely, 2^7281425438 is an apocalyptic number.

7281425438 is a deficient number, since it is larger than the sum of its proper divisors (5202199522).

7281425438 is a wasteful number, since it uses less digits than its factorization.

7281425438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49231.

The product of its digits is 430080, while the sum is 44.

The square root of 7281425438 is about 85331.2688174739. The cubic root of 7281425438 is about 1938.2307032759.

The spelling of 7281425438 in words is "seven billion, two hundred eighty-one million, four hundred twenty-five thousand, four hundred thirty-eight".