4001155252 has 24 divisors (see below), whose sum is σ = 7027606656. Its totient is φ = 1993282368.

The previous prime is 4001155243. The next prime is 4001155339. The reversal of 4001155252 is 2525511004.

It is a congruent number.

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, 1763823 + ... + 1766089.

It is an arithmetic number, because the mean of its divisors is an integer number (292816944).

Almost surely, 2^4001155252 is an apocalyptic number.

It is an amenable number.

4001155252 is a deficient number, since it is larger than the sum of its proper divisors (3026451404).

4001155252 is a wasteful number, since it uses less digits than its factorization.

4001155252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 4001155252 is about 63254.6856130042. The cubic root of 4001155252 is about 1587.5538579450.

Adding to 4001155252 its reverse (2525511004), we get a palindrome (6526666256).

The spelling of 4001155252 in words is "four billion, one million, one hundred fifty-five thousand, two hundred fifty-two".