1551422225243 has 12 divisors (see below), whose sum is σ = 1705430617800. Its totient is φ = 1410261156480.

The previous prime is 1551422225233. The next prime is 1551422225303. The reversal of 1551422225243 is 3425222241551.

It is not a de Polignac number, because 1551422225243 - 2²⁴ = 1551405448027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1551422225197 and 1551422225206.

It is not an unprimeable number, because it can be changed into a prime (1551422225233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853808 + ... + 1957506.

It is an arithmetic number, because the mean of its divisors is an integer number (142119218150).

Almost surely, 2^{1551422225243} is an apocalyptic number.

1551422225243 is a deficient number, since it is larger than the sum of its proper divisors (154008392557).

1551422225243 is a wasteful number, since it uses less digits than its factorization.

1551422225243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115338 (or 1115327 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

Adding to 1551422225243 its reverse (3425222241551), we get a palindrome (4976644466794).

The spelling of 1551422225243 in words is "one trillion, five hundred fifty-one billion, four hundred twenty-two million, two hundred twenty-five thousand, two hundred forty-three".