4005425631 has 8 divisors (see below), whose sum is σ = 5357631280. Its totient is φ = 2661751872.

The previous prime is 4005425629. The next prime is 4005425647. The reversal of 4005425631 is 1365245004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4005425631 - 2¹ = 4005425629 is a prime.

It is a super-2 number, since 2×4005425631² = 32086868970943496322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005425651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131876 + ... + 2133753.

It is an arithmetic number, because the mean of its divisors is an integer number (669703910).

Almost surely, 2^4005425631 is an apocalyptic number.

4005425631 is a deficient number, since it is larger than the sum of its proper divisors (1352205649).

4005425631 is a wasteful number, since it uses less digits than its factorization.

4005425631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265945.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 4005425631 is about 63288.4320472549. The cubic root of 4005425631 is about 1588.1184487348.

The spelling of 4005425631 in words is "four billion, five million, four hundred twenty-five thousand, six hundred thirty-one".