400895225 has 6 divisors (see below), whose sum is σ = 497110110. Its totient is φ = 320716160.

The previous prime is 400895213. The next prime is 400895227. The reversal of 400895225 is 522598004.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 86471401 + 314423824 = 9299^2 + 17732^2 .

It is a de Polignac number, because none of the positive numbers 2^k-400895225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400895227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8017880 + ... + 8017929.

It is an arithmetic number, because the mean of its divisors is an integer number (82851685).

Almost surely, 2^400895225 is an apocalyptic number.

It is an amenable number.

400895225 is a deficient number, since it is larger than the sum of its proper divisors (96214885).

400895225 is a wasteful number, since it uses less digits than its factorization.

400895225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16035819 (or 16035814 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 400895225 is about 20022.3681166839. The cubic root of 400895225 is about 737.3555630195.

The spelling of 400895225 in words is "four hundred million, eight hundred ninety-five thousand, two hundred twenty-five".