1648455625 has 10 divisors (see below), whose sum is σ = 2059910930. Its totient is φ = 1318764000.

The previous prime is 1648455623. The next prime is 1648455629. The reversal of 1648455625 is 5265548461.

It can be written as a sum of positive squares in 5 ways, for example, as 295392969 + 1353062656 = 17187^2 + 36784^2 .

It is not a de Polignac number, because 1648455625 - 2¹ = 1648455623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1648455623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1318140 + ... + 1319389.

It is an arithmetic number, because the mean of its divisors is an integer number (205991093).

Almost surely, 2^1648455625 is an apocalyptic number.

It is an amenable number.

1648455625 is a deficient number, since it is larger than the sum of its proper divisors (411455305).

1648455625 is an frugal number, since it uses more digits than its factorization.

1648455625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637549 (or 2637534 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 46.

The square root of 1648455625 is about 40601.1776307043. The cubic root of 1648455625 is about 1181.2969616372.

The spelling of 1648455625 in words is "one billion, six hundred forty-eight million, four hundred fifty-five thousand, six hundred twenty-five".