261725112 has 96 divisors (see below), whose sum is σ = 776720880. Its totient is φ = 78958080.

The previous prime is 261725111. The next prime is 261725141. The reversal of 261725112 is 211527162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261725111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218788 + ... + 219980.

Almost surely, 2^261725112 is an apocalyptic number.

261725112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261725112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388360440).

261725112 is an abundant number, since it is smaller than the sum of its proper divisors (514995768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261725112 is a wasteful number, since it uses less digits than its factorization.

261725112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1486 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 261725112 is about 16177.9205091384. The cubic root of 261725112 is about 639.6589263376.

The spelling of 261725112 in words is "two hundred sixty-one million, seven hundred twenty-five thousand, one hundred twelve".