400625156 has 6 divisors (see below), whose sum is σ = 701094030. Its totient is φ = 200312576.

The previous prime is 400625153. The next prime is 400625167. The reversal of 400625156 is 651526004.

It can be written as a sum of positive squares in only one way, i.e., 319336900 + 81288256 = 17870^2 + 9016^2 .

It is not an unprimeable number, because it can be changed into a prime (400625153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50078141 + ... + 50078148.

It is an arithmetic number, because the mean of its divisors is an integer number (116849005).

Almost surely, 2^400625156 is an apocalyptic number.

It is an amenable number.

400625156 is a deficient number, since it is larger than the sum of its proper divisors (300468874).

400625156 is a wasteful number, since it uses less digits than its factorization.

400625156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100156293 (or 100156291 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 400625156 is about 20015.6227982044. The cubic root of 400625156 is about 737.1899489962.

The spelling of 400625156 in words is "four hundred million, six hundred twenty-five thousand, one hundred fifty-six".