265406020 has 24 divisors (see below), whose sum is σ = 608021568. Its totient is φ = 96511200.

The previous prime is 265406017. The next prime is 265406077. The reversal of 265406020 is 20604562.

265406020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602976 + ... + 603415.

It is an arithmetic number, because the mean of its divisors is an integer number (25334232).

Almost surely, 2^265406020 is an apocalyptic number.

265406020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265406020 is an abundant number, since it is smaller than the sum of its proper divisors (342615548).

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

265406020 is a wasteful number, since it uses less digits than its factorization.

265406020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206411 (or 1206409 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 265406020 is about 16291.2866281335. The cubic root of 265406020 is about 642.6437030633.

The spelling of 265406020 in words is "two hundred sixty-five million, four hundred six thousand, twenty".