28293312025 has 36 divisors (see below), whose sum is σ = 38590554352. Its totient is φ = 20562300000.

The previous prime is 28293312017. The next prime is 28293312059. The reversal of 28293312025 is 52021339282.

It is not a de Polignac number, because 28293312025 - 2³ = 28293312017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6080950 + ... + 6085600.

Almost surely, 2^28293312025 is an apocalyptic number.

28293312025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28293312025 is a deficient number, since it is larger than the sum of its proper divisors (10297242327).

28293312025 is a wasteful number, since it uses less digits than its factorization.

28293312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 28293312025 in words is "twenty-eight billion, two hundred ninety-three million, three hundred twelve thousand, twenty-five".