28374139225 has 12 divisors (see below), whose sum is σ = 35290238800. Its totient is φ = 22630726800.

The previous prime is 28374139223. The next prime is 28374139253. The reversal of 28374139225 is 52293147382.

It is not a de Polignac number, because 28374139225 - 2¹ = 28374139223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28374139223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1706175 + ... + 1722724.

Almost surely, 2^28374139225 is an apocalyptic number.

28374139225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28374139225 is a deficient number, since it is larger than the sum of its proper divisors (6916099575).

28374139225 is a wasteful number, since it uses less digits than its factorization.

28374139225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429240 (or 3429235 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 28374139225 in words is "twenty-eight billion, three hundred seventy-four million, one hundred thirty-nine thousand, two hundred twenty-five".