405525016 has 16 divisors (see below), whose sum is σ = 818848800. Its totient is φ = 187165344.

The previous prime is 405524947. The next prime is 405525019. The reversal of 405525016 is 610525504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405525019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949536 + ... + 1949743.

It is an arithmetic number, because the mean of its divisors is an integer number (51178050).

Almost surely, 2^405525016 is an apocalyptic number.

It is an amenable number.

405525016 is an abundant number, since it is smaller than the sum of its proper divisors (413323784).

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

405525016 is a wasteful number, since it uses less digits than its factorization.

405525016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899298 (or 3899294 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 405525016 is about 20137.6517002356. The cubic root of 405525016 is about 740.1831881515.

The spelling of 405525016 in words is "four hundred five million, five hundred twenty-five thousand, sixteen".