505425473402 has 4 divisors (see below), whose sum is σ = 758138210106. Its totient is φ = 252712736700.

The previous prime is 505425473389. The next prime is 505425473431. The reversal of 505425473402 is 204374524505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204374524505 = 5 ⋅40874904901.

It can be written as a sum of positive squares in only one way, i.e., 505366013881 + 59459521 = 710891^2 + 7711^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 505425473402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126356368349 + ... + 126356368352.

Almost surely, 2^505425473402 is an apocalyptic number.

505425473402 is a deficient number, since it is larger than the sum of its proper divisors (252712736704).

505425473402 is a wasteful number, since it uses less digits than its factorization.

505425473402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252712736703.

The product of its (nonzero) digits is 672000, while the sum is 41.

Adding to 505425473402 its reverse (204374524505), we get a palindrome (709799997907).

The spelling of 505425473402 in words is "five hundred five billion, four hundred twenty-five million, four hundred seventy-three thousand, four hundred two".