161425312 has 12 divisors (see below), whose sum is σ = 317806146. Its totient is φ = 80712640.

The previous prime is 161425309. The next prime is 161425321. The reversal of 161425312 is 213524161.

It is a happy number.

161425312 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 only one way, i.e., 81072016 + 80353296 = 9004^2 + 8964^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522239 + ... + 2522302.

Almost surely, 2^161425312 is an apocalyptic number.

It is an amenable number.

161425312 is a deficient number, since it is larger than the sum of its proper divisors (156380834).

161425312 is an equidigital number, since it uses as much as digits as its factorization.

161425312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044551 (or 5044543 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 161425312 is about 12705.3261272586. The cubic root of 161425312 is about 544.4907984165.

Adding to 161425312 its reverse (213524161), we get a palindrome (374949473).

The spelling of 161425312 in words is "one hundred sixty-one million, four hundred twenty-five thousand, three hundred twelve".