20125320202 has 16 divisors (see below), whose sum is σ = 33043088232. Its totient is φ = 9136336320.

The previous prime is 20125320179. The next prime is 20125320251. The reversal of 20125320202 is 20202352102.

It can be written as a sum of positive squares in 4 ways, for example, as 13491054801 + 6634265401 = 116151^2 + 81451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20125320202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6343093 + ... + 6346264.

Almost surely, 2^20125320202 is an apocalyptic number.

20125320202 is a deficient number, since it is larger than the sum of its proper divisors (12917768030).

20125320202 is a wasteful number, since it uses less digits than its factorization.

20125320202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12689433.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20125320202 its reverse (20202352102), we get a palindrome (40327672304).

The spelling of 20125320202 in words is "twenty billion, one hundred twenty-five million, three hundred twenty thousand, two hundred two".