201131025 has 24 divisors (see below), whose sum is σ = 338817600. Its totient is φ = 105243840.

The previous prime is 201130999. The next prime is 201131053. The reversal of 201131025 is 520131102.

It is not a de Polignac number, because 201131025 - 2¹⁰ = 201130001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 201130995 and 201131013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21325 + ... + 29274.

It is an arithmetic number, because the mean of its divisors is an integer number (14117400).

Almost surely, 2^201131025 is an apocalyptic number.

201131025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201131025 is a deficient number, since it is larger than the sum of its proper divisors (137686575).

201131025 is a wasteful number, since it uses less digits than its factorization.

201131025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50665 (or 50660 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 201131025 is about 14182.0670214183. The cubic root of 201131025 is about 585.9038551704.

Adding to 201131025 its reverse (520131102), we get a palindrome (721262127).

The spelling of 201131025 in words is "two hundred one million, one hundred thirty-one thousand, twenty-five".