265213506 has 32 divisors (see below), whose sum is σ = 557059968. Its totient is φ = 84015360.

The previous prime is 265213499. The next prime is 265213513. The reversal of 265213506 is 605312562.

It is an interprime number because it is at equal distance from previous prime (265213499) and next prime (265213513).

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, 15546 + ... + 27786.

It is an arithmetic number, because the mean of its divisors is an integer number (17408124).

Almost surely, 2^265213506 is an apocalyptic number.

265213506 is an abundant number, since it is smaller than the sum of its proper divisors (291846462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265213506 is a wasteful number, since it uses less digits than its factorization.

265213506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 265213506 is about 16285.3770604183. The cubic root of 265213506 is about 642.4882835353.

The spelling of 265213506 in words is "two hundred sixty-five million, two hundred thirteen thousand, five hundred six".