128593225 has 6 divisors (see below), whose sum is σ = 159455630. Its totient is φ = 102874560.

The previous prime is 128593189. The next prime is 128593229. The reversal of 128593225 is 522395821.

It can be written as a sum of positive squares in 3 ways, for example, as 6446521 + 122146704 = 2539^2 + 11052^2 .

It is not a de Polignac number, because 128593225 - 2⁹ = 128592713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128593229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2571840 + ... + 2571889.

Almost surely, 2^128593225 is an apocalyptic number.

It is an amenable number.

128593225 is a deficient number, since it is larger than the sum of its proper divisors (30862405).

128593225 is an equidigital number, since it uses as much as digits as its factorization.

128593225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143739 (or 5143734 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 128593225 is about 11339.8952817034. The cubic root of 128593225 is about 504.7457793089.

The spelling of 128593225 in words is "one hundred twenty-eight million, five hundred ninety-three thousand, two hundred twenty-five".