165025525003 has 4 divisors (see below), whose sum is σ = 168139214208. Its totient is φ = 161911835800.

The previous prime is 165025524949. The next prime is 165025525033. The reversal of 165025525003 is 300525520561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165025525003 - 2²¹ = 165023427851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165025525003.

It is not an unprimeable number, because it can be changed into a prime (165025525033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556844523 + ... + 1556844628.

It is an arithmetic number, because the mean of its divisors is an integer number (42034803552).

Almost surely, 2^165025525003 is an apocalyptic number.

165025525003 is a deficient number, since it is larger than the sum of its proper divisors (3113689205).

165025525003 is an equidigital number, since it uses as much as digits as its factorization.

165025525003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113689204.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 165025525003 in words is "one hundred sixty-five billion, twenty-five million, five hundred twenty-five thousand, three".