28451826825 has 12 divisors (see below), whose sum is σ = 47040353808. Its totient is φ = 15174307600.

The previous prime is 28451826817. The next prime is 28451826829. The reversal of 28451826825 is 52862815482.

It is not a de Polignac number, because 28451826825 - 2³ = 28451826817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28451826829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189678771 + ... + 189678920.

It is an arithmetic number, because the mean of its divisors is an integer number (3920029484).

Almost surely, 2^28451826825 is an apocalyptic number.

28451826825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28451826825 is a deficient number, since it is larger than the sum of its proper divisors (18588526983).

28451826825 is a wasteful number, since it uses less digits than its factorization.

28451826825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379357704 (or 379357699 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 51.

The spelling of 28451826825 in words is "twenty-eight billion, four hundred fifty-one million, eight hundred twenty-six thousand, eight hundred twenty-five".