161025236 has 12 divisors (see below), whose sum is σ = 287111412. Its totient is φ = 78993408.

The previous prime is 161025233. The next prime is 161025251. The reversal of 161025236 is 632520161.

It can be written as a sum of positive squares in 2 ways, for example, as 69822736 + 91202500 = 8356^2 + 9550^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161025233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379565 + ... + 379988.

It is an arithmetic number, because the mean of its divisors is an integer number (23925951).

Almost surely, 2^161025236 is an apocalyptic number.

It is an amenable number.

161025236 is a deficient number, since it is larger than the sum of its proper divisors (126086176).

161025236 is a wasteful number, since it uses less digits than its factorization.

161025236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759610 (or 759608 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 161025236 is about 12689.5719391948. The cubic root of 161025236 is about 544.0406048483.

Adding to 161025236 its reverse (632520161), we get a palindrome (793545397).

The spelling of 161025236 in words is "one hundred sixty-one million, twenty-five thousand, two hundred thirty-six".