261425106 has 48 divisors (see below), whose sum is σ = 579384000. Its totient is φ = 85165344.

The previous prime is 261425069. The next prime is 261425117. The reversal of 261425106 is 601524162.

261425106 is a `hidden beast` number, since 2 + 6 + 142 + 510 + 6 = 666.

It is a super-2 number, since 2×261425106² = 136686172094222472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 261425106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210720 + ... + 211956.

It is an arithmetic number, because the mean of its divisors is an integer number (12070500).

Almost surely, 2^261425106 is an apocalyptic number.

261425106 is an abundant number, since it is smaller than the sum of its proper divisors (317958894).

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

261425106 is a wasteful number, since it uses less digits than its factorization.

261425106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 261425106 is about 16168.6457688948. The cubic root of 261425106 is about 639.4144269538.

Adding to 261425106 its reverse (601524162), we get a palindrome (862949268).

The spelling of 261425106 in words is "two hundred sixty-one million, four hundred twenty-five thousand, one hundred six".