26161265 has 16 divisors (see below), whose sum is σ = 33953808. Its totient is φ = 19236096.

The previous prime is 26161259. The next prime is 26161307. The reversal of 26161265 is 56216162.

It can be written as a sum of positive squares in 8 ways, for example, as 446224 + 25715041 = 668^2 + 5071^2 .

It is a cyclic number.

It is not a de Polignac number, because 26161265 - 2²² = 21966961 is a prime.

It is a Duffinian number.

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, 17279 + ... + 18731.

It is an arithmetic number, because the mean of its divisors is an integer number (2122113).

Almost surely, 2^26161265 is an apocalyptic number.

It is an amenable number.

26161265 is a deficient number, since it is larger than the sum of its proper divisors (7792543).

26161265 is a wasteful number, since it uses less digits than its factorization.

26161265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 4320, while the sum is 29.

The square root of 26161265 is about 5114.8084030587. The cubic root of 26161265 is about 296.8608409129.

The spelling of 26161265 in words is "twenty-six million, one hundred sixty-one thousand, two hundred sixty-five".