161125315 has 16 divisors (see below), whose sum is σ = 209297088. Its totient is φ = 118371456.

The previous prime is 161125313. The next prime is 161125331. The reversal of 161125315 is 513521161.

It is a happy number.

161125315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161125315 - 2¹ = 161125313 is a prime.

It is a super-2 number, since 2×161125315² = 51922734267698450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161125315.

It is not an unprimeable number, because it can be changed into a prime (161125313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6514 + ... + 19096.

It is an arithmetic number, because the mean of its divisors is an integer number (13081068).

Almost surely, 2^161125315 is an apocalyptic number.

161125315 is a deficient number, since it is larger than the sum of its proper divisors (48171773).

161125315 is a wasteful number, since it uses less digits than its factorization.

161125315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12798.

The product of its digits is 900, while the sum is 25.

The square root of 161125315 is about 12693.5146827031. The cubic root of 161125315 is about 544.1532906300.

Adding to 161125315 its reverse (513521161), we get a palindrome (674646476).

The spelling of 161125315 in words is "one hundred sixty-one million, one hundred twenty-five thousand, three hundred fifteen".