187545531361025 has 6 divisors (see below), whose sum is σ = 232556458887702. Its totient is φ = 150036425088800.

The previous prime is 187545531361021. The next prime is 187545531361031. The reversal of 187545531361025 is 520163135545781.

It can be written as a sum of positive squares in 3 ways, for example, as 20186393027329 + 167359138333696 = 4492927^2 + 12936736^2 .

It is not a de Polignac number, because 187545531361025 - 2² = 187545531361021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187545531361021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3750910627196 + ... + 3750910627245.

It is an arithmetic number, because the mean of its divisors is an integer number (38759409814617).

Almost surely, 2^{187545531361025} is an apocalyptic number.

It is an amenable number.

187545531361025 is a deficient number, since it is larger than the sum of its proper divisors (45010927526677).

187545531361025 is an equidigital number, since it uses as much as digits as its factorization.

187545531361025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7501821254451 (or 7501821254446 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 56.

The spelling of 187545531361025 in words is "one hundred eighty-seven trillion, five hundred forty-five billion, five hundred thirty-one million, three hundred sixty-one thousand, twenty-five".