161024013725 has 24 divisors (see below), whose sum is σ = 208387555200. Its totient is φ = 123196800320.

The previous prime is 161024013721. The next prime is 161024013751. The reversal of 161024013725 is 527310420161.

It is not a de Polignac number, because 161024013725 - 2² = 161024013721 is a prime.

It is a super-2 number, since 2×161024013725² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161024013691 and 161024013700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161024013721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3773207 + ... + 3815643.

It is an arithmetic number, because the mean of its divisors is an integer number (8682814800).

Almost surely, 2^161024013725 is an apocalyptic number.

It is an amenable number.

161024013725 is a deficient number, since it is larger than the sum of its proper divisors (47363541475).

161024013725 is a wasteful number, since it uses less digits than its factorization.

161024013725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49069 (or 49064 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 161024013725 its reverse (527310420161), we get a palindrome (688334433886).

The spelling of 161024013725 in words is "one hundred sixty-one billion, twenty-four million, thirteen thousand, seven hundred twenty-five".