161162125 has 32 divisors (see below), whose sum is σ = 214812000. Its totient is φ = 120294400.

The previous prime is 161162101. The next prime is 161162147. The reversal of 161162125 is 521261161.

It is a happy number.

161162125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 98783721 + 62378404 = 9939^2 + 7898^2 .

It is not a de Polignac number, because 161162125 - 2⁵ = 161162093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 161162125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316371 + ... + 316879.

It is an arithmetic number, because the mean of its divisors is an integer number (6712875).

Almost surely, 2^161162125 is an apocalyptic number.

It is an amenable number.

161162125 is a deficient number, since it is larger than the sum of its proper divisors (53649875).

161162125 is a wasteful number, since it uses less digits than its factorization.

161162125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 680 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 161162125 is about 12694.9645529241. The cubic root of 161162125 is about 544.1947257856.

It can be divided in two parts, 1611 and 62125, that added together give a palindrome (63736).

The spelling of 161162125 in words is "one hundred sixty-one million, one hundred sixty-two thousand, one hundred twenty-five".