220125491 has 2 divisors, whose sum is σ = 220125492. Its totient is φ = 220125490.

The previous prime is 220125467. The next prime is 220125511. The reversal of 220125491 is 194521022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220125491 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220125491.

It is not a weakly prime, because it can be changed into another prime (220125091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110062745 + 110062746.

It is an arithmetic number, because the mean of its divisors is an integer number (110062746).

Almost surely, 2^220125491 is an apocalyptic number.

220125491 is a deficient number, since it is larger than the sum of its proper divisors (1).

220125491 is an equidigital number, since it uses as much as digits as its factorization.

220125491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 220125491 is about 14836.6266718550. The cubic root of 220125491 is about 603.7958345010.

The spelling of 220125491 in words is "two hundred twenty million, one hundred twenty-five thousand, four hundred ninety-one".