4020425261 has 16 divisors (see below), whose sum is σ = 4166615040. Its totient is φ = 3876977520.

The previous prime is 4020425243. The next prime is 4020425263. The reversal of 4020425261 is 1625240204.

4020425261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4020425261 - 2²² = 4016230957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4020425261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020425263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564900 + ... + 2566466.

It is an arithmetic number, because the mean of its divisors is an integer number (260413440).

Almost surely, 2^4020425261 is an apocalyptic number.

It is an amenable number.

4020425261 is a deficient number, since it is larger than the sum of its proper divisors (146189779).

4020425261 is a wasteful number, since it uses less digits than its factorization.

4020425261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4020425261 is about 63406.8234577321. The cubic root of 4020425261 is about 1590.0983894128.

Adding to 4020425261 its reverse (1625240204), we get a palindrome (5645665465).

The spelling of 4020425261 in words is "four billion, twenty million, four hundred twenty-five thousand, two hundred sixty-one".