261425107 has 8 divisors (see below), whose sum is σ = 274180896. Its totient is φ = 248785152.

The previous prime is 261425069. The next prime is 261425117. The reversal of 261425107 is 701524162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261425107 is a prime.

It is a super-2 number, since 2×261425107² = 136686173139922898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261425117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24318 + ... + 33379.

It is an arithmetic number, because the mean of its divisors is an integer number (34272612).

Almost surely, 2^261425107 is an apocalyptic number.

261425107 is a deficient number, since it is larger than the sum of its proper divisors (12755789).

261425107 is a wasteful number, since it uses less digits than its factorization.

261425107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57917.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 261425107 is about 16168.6457998189. The cubic root of 261425107 is about 639.4144277691.

Adding to 261425107 its reverse (701524162), we get a palindrome (962949269).

The spelling of 261425107 in words is "two hundred sixty-one million, four hundred twenty-five thousand, one hundred seven".