2221425453251 has 4 divisors (see below), whose sum is σ = 2221527925032. Its totient is φ = 2221322981472.

The previous prime is 2221425453227. The next prime is 2221425453263. The reversal of 2221425453251 is 1523545241222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221425453251 - 2³⁴ = 2204245584067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221425453281) 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, 51203366 + ... + 51246731.

It is an arithmetic number, because the mean of its divisors is an integer number (555381981258).

Almost surely, 2^{2221425453251} is an apocalyptic number.

2221425453251 is a deficient number, since it is larger than the sum of its proper divisors (102471781).

2221425453251 is a wasteful number, since it uses less digits than its factorization.

2221425453251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102471780.

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

The spelling of 2221425453251 in words is "two trillion, two hundred twenty-one billion, four hundred twenty-five million, four hundred fifty-three thousand, two hundred fifty-one".