1401243425 has 6 divisors (see below), whose sum is σ = 1737541878. Its totient is φ = 1120994720.

The previous prime is 1401243419. The next prime is 1401243439. The reversal of 1401243425 is 5243421041.

It can be written as a sum of positive squares in 3 ways, for example, as 8162449 + 1393080976 = 2857^2 + 37324^2 .

It is not a de Polignac number, because 1401243425 - 2¹⁶ = 1401177889 is a prime.

It is a super-2 number, since 2×1401243425² = 3926966272211461250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401243394 and 1401243403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28024844 + ... + 28024893.

It is an arithmetic number, because the mean of its divisors is an integer number (289590313).

Almost surely, 2^1401243425 is an apocalyptic number.

It is an amenable number.

1401243425 is a deficient number, since it is larger than the sum of its proper divisors (336298453).

1401243425 is an equidigital number, since it uses as much as digits as its factorization.

1401243425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56049747 (or 56049742 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1401243425 is about 37433.1861454512. The cubic root of 1401243425 is about 1119.0200359358.

Adding to 1401243425 its reverse (5243421041), we get a palindrome (6644664466).

The spelling of 1401243425 in words is "one billion, four hundred one million, two hundred forty-three thousand, four hundred twenty-five".