405041400125 has 8 divisors (see below), whose sum is σ = 505491667512. Its totient is φ = 324033120000.

The previous prime is 405041400107. The next prime is 405041400167. The reversal of 405041400125 is 521004140504.

It can be written as a sum of positive squares in 4 ways, for example, as 2555201401 + 402486198724 = 50549^2 + 634418^2 .

It is not a de Polignac number, because 405041400125 - 2²² = 405037205821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405041400094 and 405041400103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620165476 + ... + 1620165725.

It is an arithmetic number, because the mean of its divisors is an integer number (63186458439).

Almost surely, 2^405041400125 is an apocalyptic number.

It is an amenable number.

405041400125 is a deficient number, since it is larger than the sum of its proper divisors (100450267387).

405041400125 is an equidigital number, since it uses as much as digits as its factorization.

405041400125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240331216 (or 3240331206 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 405041400125 its reverse (521004140504), we get a palindrome (926045540629).

The spelling of 405041400125 in words is "four hundred five billion, forty-one million, four hundred thousand, one hundred twenty-five".