1655466625 has 16 divisors (see below), whose sum is σ = 2094335568. Its totient is φ = 1306224000.

The previous prime is 1655466587. The next prime is 1655466641. The reversal of 1655466625 is 5266645561.

It can be written as a sum of positive squares in 8 ways, for example, as 682463376 + 973003249 = 26124^2 + 31193^2 .

It is not a de Polignac number, because 1655466625 - 2⁷ = 1655466497 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 81586 + ... + 99835.

It is an arithmetic number, because the mean of its divisors is an integer number (130895973).

Almost surely, 2^1655466625 is an apocalyptic number.

It is an amenable number.

1655466625 is a deficient number, since it is larger than the sum of its proper divisors (438868943).

1655466625 is an equidigital number, since it uses as much as digits as its factorization.

1655466625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181509 (or 181499 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The square root of 1655466625 is about 40687.4258831890. The cubic root of 1655466625 is about 1182.9693065723.

The spelling of 1655466625 in words is "one billion, six hundred fifty-five million, four hundred sixty-six thousand, six hundred twenty-five".