161348525 has 18 divisors (see below), whose sum is σ = 216651870. Its totient is φ = 119146560.

The previous prime is 161348503. The next prime is 161348531. The reversal of 161348525 is 525843161.

It can be written as a sum of positive squares in 9 ways, for example, as 135815716 + 25532809 = 11654^2 + 5053^2 .

It is not a de Polignac number, because 161348525 - 2⁶ = 161348461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14870 + ... + 23319.

It is an arithmetic number, because the mean of its divisors is an integer number (12036215).

Almost surely, 2^161348525 is an apocalyptic number.

It is an amenable number.

161348525 is a deficient number, since it is larger than the sum of its proper divisors (55303345).

161348525 is a wasteful number, since it uses less digits than its factorization.

161348525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38225 (or 38207 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 161348525 is about 12702.3039248791. The cubic root of 161348525 is about 544.4044500292.

The spelling of 161348525 in words is "one hundred sixty-one million, three hundred forty-eight thousand, five hundred twenty-five".