1209580225 has 12 divisors (see below), whose sum is σ = 1714148224. Its totient is φ = 829426320.

The previous prime is 1209580217. The next prime is 1209580241. The reversal of 1209580225 is 5220859021.

It is a happy number.

It is not a de Polignac number, because 1209580225 - 2³ = 1209580217 is a prime.

It is a super-2 number, since 2×1209580225² = 2926168641422101250, which contains 22 as substring.

It is a Duffinian number.

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, 3455769 + ... + 3456118.

Almost surely, 2^1209580225 is an apocalyptic number.

It is an amenable number.

1209580225 is a deficient number, since it is larger than the sum of its proper divisors (504567999).

1209580225 is an equidigital number, since it uses as much as digits as its factorization.

1209580225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911904 (or 6911899 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1209580225 is about 34779.0198970586. The cubic root of 1209580225 is about 1065.4789957428.

The spelling of 1209580225 in words is "one billion, two hundred nine million, five hundred eighty thousand, two hundred twenty-five".