400825005 has 16 divisors (see below), whose sum is σ = 732937344. Its totient is φ = 183234240.

The previous prime is 400824953. The next prime is 400825013. The reversal of 400825005 is 500528004.

It is not a de Polignac number, because 400825005 - 2⁷ = 400824877 is a prime.

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, 1908586 + ... + 1908795.

It is an arithmetic number, because the mean of its divisors is an integer number (45808584).

Almost surely, 2^400825005 is an apocalyptic number.

It is an amenable number.

400825005 is a deficient number, since it is larger than the sum of its proper divisors (332112339).

400825005 is a wasteful number, since it uses less digits than its factorization.

400825005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817396.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 400825005 is about 20020.6145010587. The cubic root of 400825005 is about 737.3125092673.

The spelling of 400825005 in words is "four hundred million, eight hundred twenty-five thousand, five".