400153125 has 24 divisors (see below), whose sum is σ = 666894816. Its totient is φ = 213410000.

The previous prime is 400153121. The next prime is 400153133. The reversal of 400153125 is 521351004.

It is not a de Polignac number, because 400153125 - 2² = 400153121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400153121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11967 + ... + 30716.

It is an arithmetic number, because the mean of its divisors is an integer number (27787284).

Almost surely, 2^400153125 is an apocalyptic number.

It is an amenable number.

400153125 is a deficient number, since it is larger than the sum of its proper divisors (266741691).

400153125 is an frugal number, since it uses more digits than its factorization.

400153125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42711 (or 42691 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 400153125 is about 20003.8277587066. The cubic root of 400153125 is about 736.9003072872.

The spelling of 400153125 in words is "four hundred million, one hundred fifty-three thousand, one hundred twenty-five".