400825252 has 24 divisors (see below), whose sum is σ = 744889824. Its totient is φ = 188068992.

The previous prime is 400825247. The next prime is 400825253. The reversal of 400825252 is 252528004.

It is a self number, because there is not a number n which added to its sum of digits gives 400825252.

It is not an unprimeable number, because it can be changed into a prime (400825253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15103 + ... + 32089.

It is an arithmetic number, because the mean of its divisors is an integer number (31037076).

Almost surely, 2^400825252 is an apocalyptic number.

It is an amenable number.

400825252 is a deficient number, since it is larger than the sum of its proper divisors (344064572).

400825252 is a wasteful number, since it uses less digits than its factorization.

400825252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17355 (or 17353 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 400825252 is about 20020.6206696995. The cubic root of 400825252 is about 737.3126607184.

The spelling of 400825252 in words is "four hundred million, eight hundred twenty-five thousand, two hundred fifty-two".