1566051225 has 12 divisors (see below), whose sum is σ = 2589204816. Its totient is φ = 835227280.

The previous prime is 1566051217. The next prime is 1566051229. The reversal of 1566051225 is 5221506651.

It is not a de Polignac number, because 1566051225 - 2³ = 1566051217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1566051229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10440267 + ... + 10440416.

It is an arithmetic number, because the mean of its divisors is an integer number (215767068).

Almost surely, 2^1566051225 is an apocalyptic number.

1566051225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1566051225 is a deficient number, since it is larger than the sum of its proper divisors (1023153591).

1566051225 is a wasteful number, since it uses less digits than its factorization.

1566051225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20880696 (or 20880691 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 1566051225 is about 39573.3650957307. The cubic root of 1566051225 is about 1161.2756539696.

Adding to 1566051225 its reverse (5221506651), we get a palindrome (6787557876).

The spelling of 1566051225 in words is "one billion, five hundred sixty-six million, fifty-one thousand, two hundred twenty-five".