28107523025 has 12 divisors (see below), whose sum is σ = 34855721100. Its totient is φ = 22484474880.

The previous prime is 28107523001. The next prime is 28107523043. The reversal of 28107523025 is 52032570182.

It can be written as a sum of positive squares in 6 ways, for example, as 10643636224 + 17463886801 = 103168^2 + 132151^2 .

It is not a de Polignac number, because 28107523025 - 2²⁶ = 28040414161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458381 + ... + 516069.

It is an arithmetic number, because the mean of its divisors is an integer number (2904643425).

Almost surely, 2^28107523025 is an apocalyptic number.

28107523025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28107523025 is a deficient number, since it is larger than the sum of its proper divisors (6748198075).

28107523025 is a wasteful number, since it uses less digits than its factorization.

28107523025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77188 (or 77183 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 28107523025 in words is "twenty-eight billion, one hundred seven million, five hundred twenty-three thousand, twenty-five".