22625011261 has 2 divisors, whose sum is σ = 22625011262. Its totient is φ = 22625011260.

The previous prime is 22625011249. The next prime is 22625011291. The reversal of 22625011261 is 16211052622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15653763225 + 6971248036 = 125115^2 + 83494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22625011261 is a prime.

It is a super-2 number, since 2×22625011261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22625011291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11312505630 + 11312505631.

It is an arithmetic number, because the mean of its divisors is an integer number (11312505631).

Almost surely, 2^22625011261 is an apocalyptic number.

It is an amenable number.

22625011261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22625011261 is an equidigital number, since it uses as much as digits as its factorization.

22625011261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 22625011261 its reverse (16211052622), we get a palindrome (38836063883).

The spelling of 22625011261 in words is "twenty-two billion, six hundred twenty-five million, eleven thousand, two hundred sixty-one".