225121711 has 2 divisors, whose sum is σ = 225121712. Its totient is φ = 225121710.

The previous prime is 225121697. The next prime is 225121717. The reversal of 225121711 is 117121522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225121711 - 2¹³ = 225113519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225121717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112560855 + 112560856.

It is an arithmetic number, because the mean of its divisors is an integer number (112560856).

Almost surely, 2^225121711 is an apocalyptic number.

225121711 is a deficient number, since it is larger than the sum of its proper divisors (1).

225121711 is an equidigital number, since it uses as much as digits as its factorization.

225121711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280, while the sum is 22.

The square root of 225121711 is about 15004.0564848310. The cubic root of 225121711 is about 608.3298495495.

The spelling of 225121711 in words is "two hundred twenty-five million, one hundred twenty-one thousand, seven hundred eleven".