265465020 has 48 divisors (see below), whose sum is σ = 748063008. Its totient is φ = 70337280.

The previous prime is 265465009. The next prime is 265465021. The reversal of 265465020 is 20564562.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265465021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4671 + ... + 23510.

It is an arithmetic number, because the mean of its divisors is an integer number (15584646).

Almost surely, 2^265465020 is an apocalyptic number.

265465020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265465020 is an abundant number, since it is smaller than the sum of its proper divisors (482597988).

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

265465020 is a wasteful number, since it uses less digits than its factorization.

265465020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28350 (or 28348 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 265465020 is about 16293.0973114384. The cubic root of 265465020 is about 642.6913196286.

The spelling of 265465020 in words is "two hundred sixty-five million, four hundred sixty-five thousand, twenty".