201523541125 has 16 divisors (see below), whose sum is σ = 260173845360. Its totient is φ = 155659560000.

The previous prime is 201523541119. The next prime is 201523541159. The reversal of 201523541125 is 521145325102.

It can be written as a sum of positive squares in 8 ways, for example, as 77641364164 + 123882176961 = 278642^2 + 351969^2 .

It is not a de Polignac number, because 201523541125 - 2²¹ = 201521443973 is a prime.

It is a super-2 number, since 2×201523541125² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27792726 + ... + 27799975.

It is an arithmetic number, because the mean of its divisors is an integer number (16260865335).

Almost surely, 2^201523541125 is an apocalyptic number.

201523541125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201523541125 is a deficient number, since it is larger than the sum of its proper divisors (58650304235).

201523541125 is an equidigital number, since it uses as much as digits as its factorization.

201523541125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55592745 (or 55592735 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 201523541125 its reverse (521145325102), we get a palindrome (722668866227).

The spelling of 201523541125 in words is "two hundred one billion, five hundred twenty-three million, five hundred forty-one thousand, one hundred twenty-five".