261525095 has 16 divisors (see below), whose sum is σ = 341463360. Its totient is φ = 191130624.

The previous prime is 261525079. The next prime is 261525107. The reversal of 261525095 is 590525162.

It is a cyclic number.

It is not a de Polignac number, because 261525095 - 2⁴ = 261525079 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14435 + ... + 27044.

It is an arithmetic number, because the mean of its divisors is an integer number (21341460).

Almost surely, 2^261525095 is an apocalyptic number.

261525095 is a deficient number, since it is larger than the sum of its proper divisors (79938265).

261525095 is a wasteful number, since it uses less digits than its factorization.

261525095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41594.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 261525095 is about 16171.7375380631. The cubic root of 261525095 is about 639.4959369265.

The spelling of 261525095 in words is "two hundred sixty-one million, five hundred twenty-five thousand, ninety-five".