400265265 has 16 divisors (see below), whose sum is σ = 645470208. Its totient is φ = 211792896.

The previous prime is 400265231. The next prime is 400265287. The reversal of 400265265 is 562562004.

It is not a de Polignac number, because 400265265 - 2⁸ = 400265009 is a prime.

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, 103152 + ... + 106961.

It is an arithmetic number, because the mean of its divisors is an integer number (40341888).

Almost surely, 2^400265265 is an apocalyptic number.

It is an amenable number.

400265265 is a deficient number, since it is larger than the sum of its proper divisors (245204943).

400265265 is a wasteful number, since it uses less digits than its factorization.

400265265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210248.

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

The square root of 400265265 is about 20006.6305259032. The cubic root of 400265265 is about 736.9691378399.

The spelling of 400265265 in words is "four hundred million, two hundred sixty-five thousand, two hundred sixty-five".