161025607 has 4 divisors (see below), whose sum is σ = 164063880. Its totient is φ = 157987336.

The previous prime is 161025577. The next prime is 161025617. The reversal of 161025607 is 706520161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161025607 - 2¹¹ = 161023559 is a prime.

It is a super-2 number, since 2×161025607² = 51858492219436898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161025617) 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 3 ways as a sum of consecutive naturals, for example, 1519057 + ... + 1519162.

It is an arithmetic number, because the mean of its divisors is an integer number (41015970).

Almost surely, 2^161025607 is an apocalyptic number.

161025607 is a deficient number, since it is larger than the sum of its proper divisors (3038273).

161025607 is an equidigital number, since it uses as much as digits as its factorization.

161025607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038272.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 161025607 is about 12689.5865574888. The cubic root of 161025607 is about 544.0410226688.

Adding to 161025607 its reverse (706520161), we get a palindrome (867545768).

The spelling of 161025607 in words is "one hundred sixty-one million, twenty-five thousand, six hundred seven".