400625041 has 2 divisors, whose sum is σ = 400625042. Its totient is φ = 400625040.

The previous prime is 400624993. The next prime is 400625083. The reversal of 400625041 is 140526004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395850816 + 4774225 = 19896^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 400625041 - 2¹⁵ = 400592273 is a prime.

It is not a weakly prime, because it can be changed into another prime (400620041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200312520 + 200312521.

It is an arithmetic number, because the mean of its divisors is an integer number (200312521).

Almost surely, 2^400625041 is an apocalyptic number.

It is an amenable number.

400625041 is a deficient number, since it is larger than the sum of its proper divisors (1).

400625041 is an equidigital number, since it uses as much as digits as its factorization.

400625041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 400625041 is about 20015.6199254482. The cubic root of 400625041 is about 737.1898784590.

The spelling of 400625041 in words is "four hundred million, six hundred twenty-five thousand, forty-one".