265124261 has 4 divisors (see below), whose sum is σ = 265669152. Its totient is φ = 264579372.

The previous prime is 265124221. The next prime is 265124281. The reversal of 265124261 is 162421562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162421562 = 2 ⋅81210781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265124261 is a prime.

It is a super-2 number, since 2×265124261² = 140581747541592242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265124201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271715 + ... + 272688.

It is an arithmetic number, because the mean of its divisors is an integer number (66417288).

Almost surely, 2^265124261 is an apocalyptic number.

It is an amenable number.

265124261 is a deficient number, since it is larger than the sum of its proper divisors (544891).

265124261 is an equidigital number, since it uses as much as digits as its factorization.

265124261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544890.

The product of its digits is 5760, while the sum is 29.

The square root of 265124261 is about 16282.6367950649. The cubic root of 265124261 is about 642.4162091520.

The spelling of 265124261 in words is "two hundred sixty-five million, one hundred twenty-four thousand, two hundred sixty-one".