28494939325 has 6 divisors (see below), whose sum is σ = 35333724794. Its totient is φ = 22795951440.

The previous prime is 28494939313. The next prime is 28494939329. The reversal of 28494939325 is 52393949482.

It can be written as a sum of positive squares in 3 ways, for example, as 7245754884 + 21249184441 = 85122^2 + 145771^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28494939325 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28494939325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28494939329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569898762 + ... + 569898811.

Almost surely, 2^28494939325 is an apocalyptic number.

28494939325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28494939325 is a deficient number, since it is larger than the sum of its proper divisors (6838785469).

28494939325 is a wasteful number, since it uses less digits than its factorization.

28494939325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139797583 (or 1139797578 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 58.

The spelling of 28494939325 in words is "twenty-eight billion, four hundred ninety-four million, nine hundred thirty-nine thousand, three hundred twenty-five".