22125657251 has 2 divisors, whose sum is σ = 22125657252. Its totient is φ = 22125657250.

The previous prime is 22125657241. The next prime is 22125657283. The reversal of 22125657251 is 15275652122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22125657251 is a prime.

It is not a weakly prime, because it can be changed into another prime (22125657241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062828625 + 11062828626.

It is an arithmetic number, because the mean of its divisors is an integer number (11062828626).

Almost surely, 2^22125657251 is an apocalyptic number.

22125657251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22125657251 is an equidigital number, since it uses as much as digits as its factorization.

22125657251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 38.

The spelling of 22125657251 in words is "twenty-two billion, one hundred twenty-five million, six hundred fifty-seven thousand, two hundred fifty-one".