400525533 has 16 divisors (see below), whose sum is σ = 594009600. Its totient is φ = 266729760.

The previous prime is 400525459. The next prime is 400525561. The reversal of 400525533 is 335525004.

400525533 is a `hidden beast` number, since 400 + 5 + 255 + 3 + 3 = 666.

It is not a de Polignac number, because 400525533 - 2⁸ = 400525277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 400525497 and 400525506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400525733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19273 + ... + 34241.

It is an arithmetic number, because the mean of its divisors is an integer number (37125600).

Almost surely, 2^400525533 is an apocalyptic number.

It is an amenable number.

400525533 is a deficient number, since it is larger than the sum of its proper divisors (193484067).

400525533 is a wasteful number, since it uses less digits than its factorization.

400525533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15969 (or 15963 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 400525533 is about 20013.1340124429. The cubic root of 400525533 is about 737.1288385362.

The spelling of 400525533 in words is "four hundred million, five hundred twenty-five thousand, five hundred thirty-three".