1055540225 has 12 divisors (see below), whose sum is σ = 1309499520. Its totient is φ = 844026000.

The previous prime is 1055540159. The next prime is 1055540237. The reversal of 1055540225 is 5220455501.

It is not a de Polignac number, because 1055540225 - 2²⁶ = 988431361 is a prime.

It is a super-2 number, since 2×1055540225² = 2228330333186101250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49796 + ... + 67754.

It is an arithmetic number, because the mean of its divisors is an integer number (109124960).

Almost surely, 2^1055540225 is an apocalyptic number.

It is an amenable number.

1055540225 is a deficient number, since it is larger than the sum of its proper divisors (253959295).

1055540225 is a wasteful number, since it uses less digits than its factorization.

1055540225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320 (or 20315 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 1055540225 is about 32489.0785495680. The cubic root of 1055540225 is about 1018.1808614214.

Adding to 1055540225 its reverse (5220455501), we get a palindrome (6275995726).

The spelling of 1055540225 in words is "one billion, fifty-five million, five hundred forty thousand, two hundred twenty-five".