201025045 has 16 divisors (see below), whose sum is σ = 260774640. Its totient is φ = 147884544.

The previous prime is 201025007. The next prime is 201025057. The reversal of 201025045 is 540520102.

It can be written as a sum of positive squares in 8 ways, for example, as 42693156 + 158331889 = 6534^2 + 12583^2 .

It is a cyclic number.

It is not a de Polignac number, because 201025045 - 2¹³ = 201016853 is a prime.

It is a super-2 number, since 2×201025045² = 80822137434504050, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 11737 + ... + 23233.

It is an arithmetic number, because the mean of its divisors is an integer number (16298415).

Almost surely, 2^201025045 is an apocalyptic number.

It is an amenable number.

201025045 is a deficient number, since it is larger than the sum of its proper divisors (59749595).

201025045 is a wasteful number, since it uses less digits than its factorization.

201025045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11784.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 201025045 is about 14178.3301202927. The cubic root of 201025045 is about 585.8009288980.

Adding to 201025045 its reverse (540520102), we get a palindrome (741545147).

The spelling of 201025045 in words is "two hundred one million, twenty-five thousand, forty-five".