28345727472525 has 36 divisors (see below), whose sum is σ = 50949748063968. Its totient is φ = 15064301774880.

The previous prime is 28345727472481. The next prime is 28345727472541. The reversal of 28345727472525 is 52527472754382.

28345727472525 is a `hidden beast` number, since 2 + 8 + 3 + 4 + 572 + 7 + 4 + 7 + 2 + 52 + 5 = 666.

It is not a de Polignac number, because 28345727472525 - 2¹⁴ = 28345727456141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 222517617 + ... + 222644966.

Almost surely, 2^{28345727472525} is an apocalyptic number.

28345727472525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28345727472525 is a deficient number, since it is larger than the sum of its proper divisors (22604020591443).

28345727472525 is a wasteful number, since it uses less digits than its factorization.

28345727472525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445162882 (or 445162874 counting only the distinct ones).

The product of its digits is 263424000, while the sum is 63.

The spelling of 28345727472525 in words is "twenty-eight trillion, three hundred forty-five billion, seven hundred twenty-seven million, four hundred seventy-two thousand, five hundred twenty-five".