22420526251 has 4 divisors (see below), whose sum is σ = 22421804400. Its totient is φ = 22419248104.

The previous prime is 22420526207. The next prime is 22420526257. The reversal of 22420526251 is 15262502422.

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 22420526251 - 2⁷ = 22420526123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22420526257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612391 + ... + 647968.

It is an arithmetic number, because the mean of its divisors is an integer number (5605451100).

Almost surely, 2^22420526251 is an apocalyptic number.

22420526251 is a deficient number, since it is larger than the sum of its proper divisors (1278149).

22420526251 is a wasteful number, since it uses less digits than its factorization.

22420526251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278148.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 22420526251 in words is "twenty-two billion, four hundred twenty million, five hundred twenty-six thousand, two hundred fifty-one".