1405311425 has 18 divisors (see below), whose sum is σ = 2027091798. Its totient is φ = 963641280.

The previous prime is 1405311407. The next prime is 1405311451. The reversal of 1405311425 is 5241135041.

It can be written as a sum of positive squares in 3 ways, for example, as 203718529 + 1201592896 = 14273^2 + 34664^2 .

It is not a de Polignac number, because 1405311425 - 2⁸ = 1405311169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1405311394 and 1405311403.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 572372 + ... + 574821.

It is an arithmetic number, because the mean of its divisors is an integer number (112616211).

Almost surely, 2^1405311425 is an apocalyptic number.

It is an amenable number.

1405311425 is a deficient number, since it is larger than the sum of its proper divisors (621780373).

1405311425 is a wasteful number, since it uses less digits than its factorization.

1405311425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147217 (or 1147205 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1405311425 is about 37487.4835778557. The cubic root of 1405311425 is about 1120.1018787533.

Adding to 1405311425 its reverse (5241135041), we get a palindrome (6646446466).

The spelling of 1405311425 in words is "one billion, four hundred five million, three hundred eleven thousand, four hundred twenty-five".