1225750111 has 2 divisors, whose sum is σ = 1225750112. Its totient is φ = 1225750110.

The previous prime is 1225750067. The next prime is 1225750121. The reversal of 1225750111 is 1110575221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225750111 - 2⁹ = 1225749599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225750121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612875055 + 612875056.

It is an arithmetic number, because the mean of its divisors is an integer number (612875056).

Almost surely, 2^1225750111 is an apocalyptic number.

1225750111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225750111 is an equidigital number, since it uses as much as digits as its factorization.

1225750111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 1225750111 is about 35010.7142315035. The cubic root of 1225750111 is about 1070.2058331127.

The spelling of 1225750111 in words is "one billion, two hundred twenty-five million, seven hundred fifty thousand, one hundred eleven".