4125220001 has 4 divisors (see below), whose sum is σ = 4714537152. Its totient is φ = 3535902852.

The previous prime is 4125219929. The next prime is 4125220019. The reversal of 4125220001 is 1000225214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000225214 = 2 ⋅500112607.

It is a cyclic number.

It is not a de Polignac number, because 4125220001 - 2¹⁸ = 4124957857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4125220081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294658565 + ... + 294658578.

It is an arithmetic number, because the mean of its divisors is an integer number (1178634288).

Almost surely, 2^4125220001 is an apocalyptic number.

It is an amenable number.

4125220001 is a deficient number, since it is larger than the sum of its proper divisors (589317151).

4125220001 is an equidigital number, since it uses as much as digits as its factorization.

4125220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589317150.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 4125220001 is about 64227.8755759522. The cubic root of 4125220001 is about 1603.7956760369.

Adding to 4125220001 its reverse (1000225214), we get a palindrome (5125445215).

The spelling of 4125220001 in words is "four billion, one hundred twenty-five million, two hundred twenty thousand, one".