2125650402 has 18 divisors (see below), whose sum is σ = 4605999723. Its totient is φ = 708484932.

The previous prime is 2125650389. The next prime is 2125650413. The reversal of 2125650402 is 2040565212.

2125650402 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 650 + 4 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1062825201 + 1062825201 = 32601^2 + 32601^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32601.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 190173 + ... + 201039.

Almost surely, 2^2125650402 is an apocalyptic number.

2125650402 is an abundant number, since it is smaller than the sum of its proper divisors (2480349321).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2125650402 is an frugal number, since it uses more digits than its factorization.

2125650402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21742 (or 10872 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2125650402 is about 46104.7763469253. The cubic root of 2125650402 is about 1285.7719479642.

The spelling of 2125650402 in words is "two billion, one hundred twenty-five million, six hundred fifty thousand, four hundred two".