161002525 has 12 divisors (see below), whose sum is σ = 200210400. Its totient is φ = 128436080.

The previous prime is 161002469. The next prime is 161002547. The reversal of 161002525 is 525200161.

It is not a de Polignac number, because 161002525 - 2¹³ = 160994333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161002496 and 161002505.

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 11 ways as a sum of consecutive naturals, for example, 6 + ... + 17944.

It is an arithmetic number, because the mean of its divisors is an integer number (16684200).

Almost surely, 2^161002525 is an apocalyptic number.

It is an amenable number.

161002525 is a deficient number, since it is larger than the sum of its proper divisors (39207875).

161002525 is a wasteful number, since it uses less digits than its factorization.

161002525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308 (or 18303 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 161002525 is about 12688.6770389982. The cubic root of 161002525 is about 544.0150264826.

Adding to 161002525 its reverse (525200161), we get a palindrome (686202686).

The spelling of 161002525 in words is "one hundred sixty-one million, two thousand, five hundred twenty-five".