161325995 has 8 divisors (see below), whose sum is σ = 195367920. Its totient is φ = 127876320.

The previous prime is 161325991. The next prime is 161326003. The reversal of 161325995 is 599523161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161325995 - 2² = 161325991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161325991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147461 + ... + 148550.

It is an arithmetic number, because the mean of its divisors is an integer number (24420990).

Almost surely, 2^161325995 is an apocalyptic number.

161325995 is a deficient number, since it is larger than the sum of its proper divisors (34041925).

161325995 is a wasteful number, since it uses less digits than its factorization.

161325995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296125.

The product of its digits is 72900, while the sum is 41.

The square root of 161325995 is about 12701.4170469283. The cubic root of 161325995 is about 544.3791094336.

The spelling of 161325995 in words is "one hundred sixty-one million, three hundred twenty-five thousand, nine hundred ninety-five".