1055420225 has 6 divisors (see below), whose sum is σ = 1308721110. Its totient is φ = 844336160.

The previous prime is 1055420213. The next prime is 1055420269. The reversal of 1055420225 is 5220245501.

It can be written as a sum of positive squares in 3 ways, for example, as 129800449 + 925619776 = 11393^2 + 30424^2 .

It is not a de Polignac number, because 1055420225 - 2⁴ = 1055420209 is a prime.

It is a super-2 number, since 2×1055420225² = 2227823702678101250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1055420194 and 1055420203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21108380 + ... + 21108429.

It is an arithmetic number, because the mean of its divisors is an integer number (218120185).

Almost surely, 2^1055420225 is an apocalyptic number.

It is an amenable number.

1055420225 is a deficient number, since it is larger than the sum of its proper divisors (253300885).

1055420225 is an equidigital number, since it uses as much as digits as its factorization.

1055420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42216819 (or 42216814 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1055420225 is about 32487.2317226322. The cubic root of 1055420225 is about 1018.1422757030.

Adding to 1055420225 its reverse (5220245501), we get a palindrome (6275665726).

The spelling of 1055420225 in words is "one billion, fifty-five million, four hundred twenty thousand, two hundred twenty-five".