265413261 has 32 divisors (see below), whose sum is σ = 390435840. Its totient is φ = 159629184.

The previous prime is 265413259. The next prime is 265413271. The reversal of 265413261 is 162314562.

It is not a de Polignac number, because 265413261 - 2¹ = 265413259 is a prime.

It is a super-2 number, since 2×265413261² = 140888398229308242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265413271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580545 + ... + 581001.

It is an arithmetic number, because the mean of its divisors is an integer number (12201120).

Almost surely, 2^265413261 is an apocalyptic number.

It is an amenable number.

265413261 is a deficient number, since it is larger than the sum of its proper divisors (125022579).

265413261 is a wasteful number, since it uses less digits than its factorization.

265413261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its digits is 8640, while the sum is 30.

The square root of 265413261 is about 16291.5088619808. The cubic root of 265413261 is about 642.6495473678.

The spelling of 265413261 in words is "two hundred sixty-five million, four hundred thirteen thousand, two hundred sixty-one".