161425365 has 16 divisors (see below), whose sum is σ = 258552000. Its totient is φ = 86003072.

The previous prime is 161425321. The next prime is 161425391. The reversal of 161425365 is 563524161.

It is a cyclic number.

It is not a de Polignac number, because 161425365 - 2⁶ = 161425301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10606 + ... + 20864.

It is an arithmetic number, because the mean of its divisors is an integer number (16159500).

Almost surely, 2^161425365 is an apocalyptic number.

161425365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161425365 is a deficient number, since it is larger than the sum of its proper divisors (97126635).

161425365 is a wasteful number, since it uses less digits than its factorization.

161425365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316.

The product of its digits is 21600, while the sum is 33.

The square root of 161425365 is about 12705.3282129979. The cubic root of 161425365 is about 544.4908580065.

The spelling of 161425365 in words is "one hundred sixty-one million, four hundred twenty-five thousand, three hundred sixty-five".