28525199452 has 24 divisors (see below), whose sum is σ = 51633140832. Its totient is φ = 13779628800.

The previous prime is 28525199441. The next prime is 28525199459. The reversal of 28525199452 is 25499152582.

It is a super-2 number, since 2×28525199452² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28525199452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525199459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827449 + ... + 861232.

It is an arithmetic number, because the mean of its divisors is an integer number (2151380868).

Almost surely, 2^28525199452 is an apocalyptic number.

It is an amenable number.

28525199452 is a deficient number, since it is larger than the sum of its proper divisors (23107941380).

28525199452 is a wasteful number, since it uses less digits than its factorization.

28525199452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688829 (or 1688827 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 52.

The spelling of 28525199452 in words is "twenty-eight billion, five hundred twenty-five million, one hundred ninety-nine thousand, four hundred fifty-two".