401125405 has 16 divisors (see below), whose sum is σ = 502819200. Its totient is φ = 306618048.

The previous prime is 401125369. The next prime is 401125409. The reversal of 401125405 is 504521104.

It is a cyclic number.

It is not a de Polignac number, because 401125405 - 2¹⁷ = 400994333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401125409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194359 + ... + 196411.

It is an arithmetic number, because the mean of its divisors is an integer number (31426200).

Almost surely, 2^401125405 is an apocalyptic number.

It is an amenable number.

401125405 is a deficient number, since it is larger than the sum of its proper divisors (101693795).

401125405 is a wasteful number, since it uses less digits than its factorization.

401125405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 401125405 is about 20028.1153631589. The cubic root of 401125405 is about 737.4966572672.

Adding to 401125405 its reverse (504521104), we get a palindrome (905646509).

The spelling of 401125405 in words is "four hundred one million, one hundred twenty-five thousand, four hundred five".