1650772125 has 24 divisors (see below), whose sum is σ = 2975793912. Its totient is φ = 880411200.

The previous prime is 1650772087. The next prime is 1650772127. The reversal of 1650772125 is 5212770561.

It can be written as a sum of positive squares in 4 ways, for example, as 279625284 + 1371146841 = 16722^2 + 37029^2 .

It is not a de Polignac number, because 1650772125 - 2³⁰ = 577030301 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1650772125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650772127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 732552 + ... + 734801.

It is an arithmetic number, because the mean of its divisors is an integer number (123991413).

Almost surely, 2^1650772125 is an apocalyptic number.

1650772125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1650772125 is a deficient number, since it is larger than the sum of its proper divisors (1325021787).

1650772125 is a wasteful number, since it uses less digits than its factorization.

1650772125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467374 (or 1467361 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 1650772125 is about 40629.6951133035. The cubic root of 1650772125 is about 1181.8500436766.

The spelling of 1650772125 in words is "one billion, six hundred fifty million, seven hundred seventy-two thousand, one hundred twenty-five".