161425135 has 8 divisors (see below), whose sum is σ = 194261040. Its totient is φ = 128772864.

The previous prime is 161425097. The next prime is 161425151. The reversal of 161425135 is 531524161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161425135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43965 + ... + 47494.

It is an arithmetic number, because the mean of its divisors is an integer number (24282630).

Almost surely, 2^161425135 is an apocalyptic number.

161425135 is a deficient number, since it is larger than the sum of its proper divisors (32835905).

161425135 is an equidigital number, since it uses as much as digits as its factorization.

161425135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91817.

The product of its digits is 3600, while the sum is 28.

The square root of 161425135 is about 12705.3191616740. The cubic root of 161425135 is about 544.4905994083.

Adding to 161425135 its reverse (531524161), we get a palindrome (692949296).

The spelling of 161425135 in words is "one hundred sixty-one million, four hundred twenty-five thousand, one hundred thirty-five".