265205493 has 72 divisors (see below), whose sum is σ = 468163800. Its totient is φ = 144055296.

The previous prime is 265205461. The next prime is 265205503. The reversal of 265205493 is 394502562.

It can be written as a sum of positive squares in 4 ways, for example, as 1695204 + 263510289 = 1302^2 + 16233^2 .

It is not a de Polignac number, because 265205493 - 2⁵ = 265205461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265205293) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1138105 + ... + 1138337.

It is an arithmetic number, because the mean of its divisors is an integer number (6502275).

Almost surely, 2^265205493 is an apocalyptic number.

It is an amenable number.

265205493 is a deficient number, since it is larger than the sum of its proper divisors (202958307).

265205493 is a wasteful number, since it uses less digits than its factorization.

265205493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 265205493 is about 16285.1310403079. The cubic root of 265205493 is about 642.4818128863.

The spelling of 265205493 in words is "two hundred sixty-five million, two hundred five thousand, four hundred ninety-three".