161625146 has 8 divisors (see below), whose sum is σ = 242555520. Its totient is φ = 80773308.

The previous prime is 161625133. The next prime is 161625161. The reversal of 161625146 is 641526161.

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

It is a super-2 number, since 2×161625146² = 52245375639042632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14186 + ... + 22901.

It is an arithmetic number, because the mean of its divisors is an integer number (30319440).

Almost surely, 2^161625146 is an apocalyptic number.

161625146 is a deficient number, since it is larger than the sum of its proper divisors (80930374).

161625146 is a wasteful number, since it uses less digits than its factorization.

161625146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39268.

The product of its digits is 8640, while the sum is 32.

The square root of 161625146 is about 12713.1878771613. The cubic root of 161625146 is about 544.7153871231.

It can be divided in two parts, 1616 and 25146, that added together give a palindrome (26762).

The spelling of 161625146 in words is "one hundred sixty-one million, six hundred twenty-five thousand, one hundred forty-six".