28953594225 has 36 divisors (see below), whose sum is σ = 53123977452. Its totient is φ = 15065280000.

The previous prime is 28953594223. The next prime is 28953594259. The reversal of 28953594225 is 52249535982.

It is a happy number.

28953594225 is a `hidden beast` number, since 2 + 89 + 535 + 9 + 4 + 2 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 13658830641 + 15294763584 = 116871^2 + 123672^2 .

It is not a de Polignac number, because 28953594225 - 2¹ = 28953594223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28953594223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1560076 + ... + 1578525.

Almost surely, 2^28953594225 is an apocalyptic number.

28953594225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28953594225 is a deficient number, since it is larger than the sum of its proper divisors (24170383227).

28953594225 is a wasteful number, since it uses less digits than its factorization.

28953594225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138658 (or 3138650 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 28953594225 in words is "twenty-eight billion, nine hundred fifty-three million, five hundred ninety-four thousand, two hundred twenty-five".