261825195 has 16 divisors (see below), whose sum is σ = 433366560. Its totient is φ = 134824704.

The previous prime is 261825167. The next prime is 261825227. The reversal of 261825195 is 591528162.

It is not a de Polignac number, because 261825195 - 2⁶ = 261825131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300514 + ... + 301383.

It is an arithmetic number, because the mean of its divisors is an integer number (27085410).

Almost surely, 2^261825195 is an apocalyptic number.

261825195 is a deficient number, since it is larger than the sum of its proper divisors (171541365).

261825195 is a wasteful number, since it uses less digits than its factorization.

261825195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601934.

The product of its digits is 43200, while the sum is 39.

The square root of 261825195 is about 16181.0134107849. The cubic root of 261825195 is about 639.7404505818.

The spelling of 261825195 in words is "two hundred sixty-one million, eight hundred twenty-five thousand, one hundred ninety-five".