400825375 has 16 divisors (see below), whose sum is σ = 501141888. Its totient is φ = 320076000.

The previous prime is 400825367. The next prime is 400825429. The reversal of 400825375 is 573528004.

It is a happy number.

It is not a de Polignac number, because 400825375 - 2³ = 400825367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400825375.

It is a congruent number.

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, 74010 + ... + 79240.

It is an arithmetic number, because the mean of its divisors is an integer number (31321368).

Almost surely, 2^400825375 is an apocalyptic number.

400825375 is a deficient number, since it is larger than the sum of its proper divisors (100316513).

400825375 is an equidigital number, since it uses as much as digits as its factorization.

400825375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 400825375 is about 20020.6237415321. The cubic root of 400825375 is about 737.3127361374.

The spelling of 400825375 in words is "four hundred million, eight hundred twenty-five thousand, three hundred seventy-five".