28936898425 has 6 divisors (see below), whose sum is σ = 35881754078. Its totient is φ = 23149518720.

The previous prime is 28936898413. The next prime is 28936898429. The reversal of 28936898425 is 52489863982.

It can be written as a sum of positive squares in 3 ways, for example, as 611671824 + 28325226601 = 24732^2 + 168301^2 .

It is not a de Polignac number, because 28936898425 - 2⁷ = 28936898297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28936898429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578737944 + ... + 578737993.

Almost surely, 2^28936898425 is an apocalyptic number.

28936898425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28936898425 is a deficient number, since it is larger than the sum of its proper divisors (6944855653).

28936898425 is a wasteful number, since it uses less digits than its factorization.

28936898425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157475947 (or 1157475942 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

The spelling of 28936898425 in words is "twenty-eight billion, nine hundred thirty-six million, eight hundred ninety-eight thousand, four hundred twenty-five".