28250057505 has 8 divisors (see below), whose sum is σ = 45200092032. Its totient is φ = 15066697328.

The previous prime is 28250057453. The next prime is 28250057519. The reversal of 28250057505 is 50575005282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28250057505 - 2⁹ = 28250056993 is a prime.

It is a super-3 number, since 3×28250057505³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941668569 + ... + 941668598.

It is an arithmetic number, because the mean of its divisors is an integer number (5650011504).

Almost surely, 2^28250057505 is an apocalyptic number.

It is an amenable number.

28250057505 is a deficient number, since it is larger than the sum of its proper divisors (16950034527).

28250057505 is a wasteful number, since it uses less digits than its factorization.

28250057505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883337175.

The product of its (nonzero) digits is 140000, while the sum is 39.

The spelling of 28250057505 in words is "twenty-eight billion, two hundred fifty million, fifty-seven thousand, five hundred five".