201145025 has 6 divisors (see below), whose sum is σ = 249419862. Its totient is φ = 160916000.

The previous prime is 201144991. The next prime is 201145069. The reversal of 201145025 is 520541102.

It can be written as a sum of positive squares in 3 ways, for example, as 3236401 + 197908624 = 1799^2 + 14068^2 .

It is not a de Polignac number, because 201145025 - 2⁶ = 201144961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201144988 and 201145006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4022876 + ... + 4022925.

It is an arithmetic number, because the mean of its divisors is an integer number (41569977).

Almost surely, 2^201145025 is an apocalyptic number.

201145025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201145025 is a deficient number, since it is larger than the sum of its proper divisors (48274837).

201145025 is an equidigital number, since it uses as much as digits as its factorization.

201145025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045811 (or 8045806 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 201145025 is about 14182.5605939125. The cubic root of 201145025 is about 585.9174490679.

Adding to 201145025 its reverse (520541102), we get a palindrome (721686127).

The spelling of 201145025 in words is "two hundred one million, one hundred forty-five thousand, twenty-five".