400959025 has 24 divisors (see below), whose sum is σ = 529218360. Its totient is φ = 300303360.

The previous prime is 400959019. The next prime is 400959037. The reversal of 400959025 is 520959004.

It can be written as a sum of positive squares in 12 ways, for example, as 40870449 + 360088576 = 6393^2 + 18976^2 .

It is not a de Polignac number, because 400959025 - 2⁷ = 400958897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81331 + ... + 86119.

It is an arithmetic number, because the mean of its divisors is an integer number (22050765).

Almost surely, 2^400959025 is an apocalyptic number.

It is an amenable number.

400959025 is a deficient number, since it is larger than the sum of its proper divisors (128259335).

400959025 is a wasteful number, since it uses less digits than its factorization.

400959025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013 (or 5008 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 400959025 is about 20023.9612714368. The cubic root of 400959025 is about 737.3946761399.

The spelling of 400959025 in words is "four hundred million, nine hundred fifty-nine thousand, twenty-five".