20630125801 has 2 divisors, whose sum is σ = 20630125802. Its totient is φ = 20630125800.

The previous prime is 20630125727. The next prime is 20630125819. The reversal of 20630125801 is 10852103602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20346169600 + 283956201 = 142640^2 + 16851^2 .

It is a cyclic number.

It is not a de Polignac number, because 20630125801 - 2¹³ = 20630117609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20630125801.

It is not a weakly prime, because it can be changed into another prime (20630125001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10315062900 + 10315062901.

It is an arithmetic number, because the mean of its divisors is an integer number (10315062901).

Almost surely, 2^20630125801 is an apocalyptic number.

It is an amenable number.

20630125801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630125801 is an equidigital number, since it uses as much as digits as its factorization.

20630125801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 20630125801 in words is "twenty billion, six hundred thirty million, one hundred twenty-five thousand, eight hundred one".