22750681 has 2 divisors, whose sum is σ = 22750682. Its totient is φ = 22750680.

The previous prime is 22750667. The next prime is 22750687. The reversal of 22750681 is 18605722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 8462281 = 3780^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 22750681 - 2¹⁵ = 22717913 is a prime.

It is a super-2 number, since 2×22750681² = 1035186971927522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22750687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11375340 + 11375341.

It is an arithmetic number, because the mean of its divisors is an integer number (11375341).

Almost surely, 2^22750681 is an apocalyptic number.

It is an amenable number.

22750681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22750681 is an equidigital number, since it uses as much as digits as its factorization.

22750681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 22750681 is about 4769.7673947479. The cubic root of 22750681 is about 283.3553826747.

The spelling of 22750681 in words is "twenty-two million, seven hundred fifty thousand, six hundred eighty-one".