72425322505 has 4 divisors (see below), whose sum is σ = 86910387012. Its totient is φ = 57940258000.

The previous prime is 72425322499. The next prime is 72425322553. The reversal of 72425322505 is 50522352427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48286107081 + 24139215424 = 219741^2 + 155368^2 .

It is not a de Polignac number, because 72425322505 - 2⁹ = 72425321993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7242532246 + ... + 7242532255.

It is an arithmetic number, because the mean of its divisors is an integer number (21727596753).

Almost surely, 2^72425322505 is an apocalyptic number.

It is an amenable number.

72425322505 is a deficient number, since it is larger than the sum of its proper divisors (14485064507).

72425322505 is a wasteful number, since it uses less digits than its factorization.

72425322505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14485064506.

The product of its (nonzero) digits is 168000, while the sum is 37.

The spelling of 72425322505 in words is "seventy-two billion, four hundred twenty-five million, three hundred twenty-two thousand, five hundred five".