1925648633 has 18 divisors (see below), whose sum is σ = 2117423646. Its totient is φ = 1745111424.

The previous prime is 1925648623. The next prime is 1925648639. The reversal of 1925648633 is 3368465291.

It can be written as a sum of positive squares in 3 ways, for example, as 551686144 + 1373962489 = 23488^2 + 37067^2 .

It is not a de Polignac number, because 1925648633 - 2¹⁴ = 1925632249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1925648639) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5246816 + ... + 5247182.

It is an arithmetic number, because the mean of its divisors is an integer number (117634647).

Almost surely, 2^1925648633 is an apocalyptic number.

It is an amenable number.

1925648633 is a deficient number, since it is larger than the sum of its proper divisors (191775013).

1925648633 is an frugal number, since it uses more digits than its factorization.

1925648633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 413 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 1925648633 is about 43882.2131734488. The cubic root of 1925648633 is about 1244.1106712625.

The spelling of 1925648633 in words is "one billion, nine hundred twenty-five million, six hundred forty-eight thousand, six hundred thirty-three".