125022281 has 2 divisors, whose sum is σ = 125022282. Its totient is φ = 125022280.

The previous prime is 125022263. The next prime is 125022329. The reversal of 125022281 is 182220521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73685056 + 51337225 = 8584^2 + 7165^2 .

It is a cyclic number.

It is not a de Polignac number, because 125022281 - 2¹⁰ = 125021257 is a prime.

It is a super-2 number, since 2×125022281² = 31261141492885922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125022241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62511140 + 62511141.

It is an arithmetic number, because the mean of its divisors is an integer number (62511141).

Almost surely, 2^125022281 is an apocalyptic number.

It is an amenable number.

125022281 is a deficient number, since it is larger than the sum of its proper divisors (1).

125022281 is an equidigital number, since it uses as much as digits as its factorization.

125022281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 125022281 is about 11181.3362797118. The cubic root of 125022281 is about 500.0297062350.

The spelling of 125022281 in words is "one hundred twenty-five million, twenty-two thousand, two hundred eighty-one".