201025556 has 12 divisors (see below), whose sum is σ = 352007040. Its totient is φ = 100452120.

The previous prime is 201025549. The next prime is 201025577. The reversal of 201025556 is 655520102.

201025556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201025556² = 80822548330218272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7250 + ... + 21321.

It is an arithmetic number, because the mean of its divisors is an integer number (29333920).

Almost surely, 2^201025556 is an apocalyptic number.

It is an amenable number.

201025556 is a deficient number, since it is larger than the sum of its proper divisors (150981484).

201025556 is a wasteful number, since it uses less digits than its factorization.

201025556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30334 (or 30332 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 201025556 is about 14178.3481407391. The cubic root of 201025556 is about 585.8014252607.

Adding to 201025556 its reverse (655520102), we get a palindrome (856545658).

The spelling of 201025556 in words is "two hundred one million, twenty-five thousand, five hundred fifty-six".