22125571493 has 2 divisors, whose sum is σ = 22125571494. Its totient is φ = 22125571492.

The previous prime is 22125571477. The next prime is 22125571541. The reversal of 22125571493 is 39417552122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22041262369 + 84309124 = 148463^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 22125571493 - 2⁴ = 22125571477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22125571493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22125571423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062785746 + 11062785747.

It is an arithmetic number, because the mean of its divisors is an integer number (11062785747).

Almost surely, 2^22125571493 is an apocalyptic number.

It is an amenable number.

22125571493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22125571493 is an equidigital number, since it uses as much as digits as its factorization.

22125571493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The spelling of 22125571493 in words is "twenty-two billion, one hundred twenty-five million, five hundred seventy-one thousand, four hundred ninety-three".