201042025 has 6 divisors (see below), whose sum is σ = 249292142. Its totient is φ = 160833600.

The previous prime is 201042013. The next prime is 201042113. The reversal of 201042025 is 520240102.

It can be written as a sum of positive squares in 3 ways, for example, as 35868121 + 165173904 = 5989^2 + 12852^2 .

It is not a de Polignac number, because 201042025 - 2¹⁵ = 201009257 is a prime.

It is a super-2 number, since 2×201042025² = 80835791632201250, which contains 22 as substring.

It is a Duffinian number.

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, 4020816 + ... + 4020865.

Almost surely, 2^201042025 is an apocalyptic number.

201042025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201042025 is a deficient number, since it is larger than the sum of its proper divisors (48250117).

201042025 is an equidigital number, since it uses as much as digits as its factorization.

201042025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041691 (or 8041686 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 201042025 is about 14178.9289087716. The cubic root of 201042025 is about 585.8174220663.

Adding to 201042025 its reverse (520240102), we get a palindrome (721282127).

The spelling of 201042025 in words is "two hundred one million, forty-two thousand, twenty-five".