201512125 has 16 divisors (see below), whose sum is σ = 252426096. Its totient is φ = 160608000.

The previous prime is 201512117. The next prime is 201512149. The reversal of 201512125 is 521215102.

It can be written as a sum of positive squares in 8 ways, for example, as 116079076 + 85433049 = 10774^2 + 9243^2 .

It is not a de Polignac number, because 201512125 - 2³ = 201512117 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32257 + ... + 37993.

It is an arithmetic number, because the mean of its divisors is an integer number (15776631).

Almost surely, 2^201512125 is an apocalyptic number.

201512125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201512125 is a deficient number, since it is larger than the sum of its proper divisors (50913971).

201512125 is an equidigital number, since it uses as much as digits as its factorization.

201512125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033 (or 6023 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 201512125 is about 14195.4966450632. The cubic root of 201512125 is about 586.2736755895.

Adding to 201512125 its reverse (521215102), we get a palindrome (722727227).

The spelling of 201512125 in words is "two hundred one million, five hundred twelve thousand, one hundred twenty-five".