555400225 has 6 divisors (see below), whose sum is σ = 688696310. Its totient is φ = 444320160.

The previous prime is 555400193. The next prime is 555400243. The reversal of 555400225 is 522004555.

It can be written as a sum of positive squares in 3 ways, for example, as 10784656 + 544615569 = 3284^2 + 23337^2 .

It is not a de Polignac number, because 555400225 - 2⁵ = 555400193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 555400193 and 555400202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11107980 + ... + 11108029.

Almost surely, 2^555400225 is an apocalyptic number.

It is an amenable number.

555400225 is a deficient number, since it is larger than the sum of its proper divisors (133296085).

555400225 is a wasteful number, since it uses less digits than its factorization.

555400225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22216019 (or 22216014 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 555400225 is about 23566.9307505241. The cubic root of 555400225 is about 821.9940686836.

The spelling of 555400225 in words is "five hundred fifty-five million, four hundred thousand, two hundred twenty-five".