28057743725 has 24 divisors (see below), whose sum is σ = 38060331840. Its totient is φ = 20348720000.

The previous prime is 28057743673. The next prime is 28057743731. The reversal of 28057743725 is 52734775082.

It is not a de Polignac number, because 28057743725 - 2²² = 28053549421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43376 + ... + 240825.

It is an arithmetic number, because the mean of its divisors is an integer number (1585847160).

Almost surely, 2^28057743725 is an apocalyptic number.

28057743725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28057743725 is a deficient number, since it is larger than the sum of its proper divisors (10002588115).

28057743725 is a wasteful number, since it uses less digits than its factorization.

28057743725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284581 (or 284576 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 28057743725 in words is "twenty-eight billion, fifty-seven million, seven hundred forty-three thousand, seven hundred twenty-five".