265504040 has 16 divisors (see below), whose sum is σ = 597384180. Its totient is φ = 106201600.

The previous prime is 265504033. The next prime is 265504061. The reversal of 265504040 is 40405562.

265504040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 265494436 + 9604 = 16294^2 + 98^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318761 + ... + 3318840.

Almost surely, 2^265504040 is an apocalyptic number.

265504040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265504040 is an abundant number, since it is smaller than the sum of its proper divisors (331880140).

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

265504040 is a wasteful number, since it uses less digits than its factorization.

265504040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637612 (or 6637608 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 265504040 is about 16294.2947070439. The cubic root of 265504040 is about 642.7228072507.

The spelling of 265504040 in words is "two hundred sixty-five million, five hundred four thousand, forty".