161706325 has 24 divisors (see below), whose sum is σ = 221235840. Its totient is φ = 116265600.

The previous prime is 161706319. The next prime is 161706331. The reversal of 161706325 is 523607161.

161706325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161706319) and next prime (161706331).

It is not a de Polignac number, because 161706325 - 2¹³ = 161698133 is a prime.

It is a super-2 number, since 2×161706325² = 52297871090011250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21172 + ... + 27778.

It is an arithmetic number, because the mean of its divisors is an integer number (9218160).

Almost surely, 2^161706325 is an apocalyptic number.

It is an amenable number.

161706325 is a deficient number, since it is larger than the sum of its proper divisors (59529515).

161706325 is a wasteful number, since it uses less digits than its factorization.

161706325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717 (or 6712 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 161706325 is about 12716.3801846280. The cubic root of 161706325 is about 544.8065694056.

The spelling of 161706325 in words is "one hundred sixty-one million, seven hundred six thousand, three hundred twenty-five".