28025300025 has 24 divisors (see below), whose sum is σ = 51483515360. Its totient is φ = 14946826320.

The previous prime is 28025300021. The next prime is 28025300041. The reversal of 28025300025 is 52000352082.

It is not a de Polignac number, because 28025300025 - 2² = 28025300021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28025300021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20758807 + ... + 20760156.

Almost surely, 2^28025300025 is an apocalyptic number.

28025300025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28025300025 is a deficient number, since it is larger than the sum of its proper divisors (23458215335).

28025300025 is a wasteful number, since it uses less digits than its factorization.

28025300025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41518982 (or 41518971 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 28025300025 in words is "twenty-eight billion, twenty-five million, three hundred thousand, twenty-five".