1425504213506 has 8 divisors (see below), whose sum is σ = 2138689794684. Its totient is φ = 712607615280.

The previous prime is 1425504213487. The next prime is 1425504213509. The reversal of 1425504213506 is 6053124055241.

It can be written as a sum of positive squares in 2 ways, for example, as 1394560237225 + 30943976281 = 1180915^2 + 175909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1425504213506.

It is not an unprimeable number, because it can be changed into a prime (1425504213509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72233405 + ... + 72253136.

Almost surely, 2^{1425504213506} is an apocalyptic number.

1425504213506 is a deficient number, since it is larger than the sum of its proper divisors (713185581178).

1425504213506 is a wasteful number, since it uses less digits than its factorization.

1425504213506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144491476.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 1425504213506 its reverse (6053124055241), we get a palindrome (7478628268747).

The spelling of 1425504213506 in words is "one trillion, four hundred twenty-five billion, five hundred four million, two hundred thirteen thousand, five hundred six".