161025430 has 16 divisors (see below), whose sum is σ = 290459520. Its totient is φ = 64273792.

The previous prime is 161025419. The next prime is 161025433. The reversal of 161025430 is 34520161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161025433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12019 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (18153720).

Almost surely, 2^161025430 is an apocalyptic number.

161025430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161025430 is a deficient number, since it is larger than the sum of its proper divisors (129434090).

161025430 is a wasteful number, since it uses less digits than its factorization.

161025430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34103.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 161025430 is about 12689.5795832644. The cubic root of 161025430 is about 544.0408233313.

Adding to 161025430 its reverse (34520161), we get a palindrome (195545591).

The spelling of 161025430 in words is "one hundred sixty-one million, twenty-five thousand, four hundred thirty".