553021225 has 12 divisors (see below), whose sum is σ = 686576716. Its totient is φ = 441881280.

The previous prime is 553021211. The next prime is 553021253. The reversal of 553021225 is 522120355.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 157051024 + 395970201 = 12532^2 + 19899^2 .

It is not a de Polignac number, because 553021225 - 2⁵ = 553021193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 553021225.

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, 8359 + ... + 34291.

Almost surely, 2^553021225 is an apocalyptic number.

It is an amenable number.

553021225 is a deficient number, since it is larger than the sum of its proper divisors (133555491).

553021225 is a wasteful number, since it uses less digits than its factorization.

553021225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26796 (or 26791 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 553021225 is about 23516.4033176844. The cubic root of 553021225 is about 820.8187464805.

The spelling of 553021225 in words is "five hundred fifty-three million, twenty-one thousand, two hundred twenty-five".