1111125451 has 2 divisors, whose sum is σ = 1111125452. Its totient is φ = 1111125450.

The previous prime is 1111125419. The next prime is 1111125473. The reversal of 1111125451 is 1545211111.

It is an a-pointer prime, because the next prime (1111125473) can be obtained adding 1111125451 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111125451 - 2⁵ = 1111125419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111185451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555562725 + 555562726.

It is an arithmetic number, because the mean of its divisors is an integer number (555562726).

Almost surely, 2^1111125451 is an apocalyptic number.

1111125451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111125451 is an equidigital number, since it uses as much as digits as its factorization.

1111125451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200, while the sum is 22.

The square root of 1111125451 is about 33333.5484309727. The cubic root of 1111125451 is about 1035.7486243690.

Adding to 1111125451 its reverse (1545211111), we get a palindrome (2656336562).

The spelling of 1111125451 in words is "one billion, one hundred eleven million, one hundred twenty-five thousand, four hundred fifty-one".