1125412451 has 2 divisors, whose sum is σ = 1125412452. Its totient is φ = 1125412450.

The previous prime is 1125412423. The next prime is 1125412459. The reversal of 1125412451 is 1542145211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1542145211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125412451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1125412451.

It is not a weakly prime, because it can be changed into another prime (1125412459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562706225 + 562706226.

It is an arithmetic number, because the mean of its divisors is an integer number (562706226).

Almost surely, 2^1125412451 is an apocalyptic number.

1125412451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125412451 is an equidigital number, since it uses as much as digits as its factorization.

1125412451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 1125412451 is about 33547.1675555478. The cubic root of 1125412451 is about 1040.1689971301.

Adding to 1125412451 its reverse (1542145211), we get a palindrome (2667557662).

The spelling of 1125412451 in words is "one billion, one hundred twenty-five million, four hundred twelve thousand, four hundred fifty-one".