261525112 has 8 divisors (see below), whose sum is σ = 490359600. Its totient is φ = 130762552.

The previous prime is 261525109. The next prime is 261525113. The reversal of 261525112 is 211525162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×261525112² = 136790768413225088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261525113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16345312 + ... + 16345327.

It is an arithmetic number, because the mean of its divisors is an integer number (61294950).

Almost surely, 2^261525112 is an apocalyptic number.

It is an amenable number.

261525112 is a deficient number, since it is larger than the sum of its proper divisors (228834488).

261525112 is a wasteful number, since it uses less digits than its factorization.

261525112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32690645 (or 32690641 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 261525112 is about 16171.7380636714. The cubic root of 261525112 is about 639.4959507829.

The spelling of 261525112 in words is "two hundred sixty-one million, five hundred twenty-five thousand, one hundred twelve".