1125556351 has 2 divisors, whose sum is σ = 1125556352. Its totient is φ = 1125556350.

The previous prime is 1125556331. The next prime is 1125556357. The reversal of 1125556351 is 1536555211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1125556351 - 2²³ = 1117167743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125556357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562778175 + 562778176.

It is an arithmetic number, because the mean of its divisors is an integer number (562778176).

Almost surely, 2^1125556351 is an apocalyptic number.

1125556351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125556351 is an equidigital number, since it uses as much as digits as its factorization.

1125556351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 34.

The square root of 1125556351 is about 33549.3122284198. The cubic root of 1125556351 is about 1040.2133287111.

The spelling of 1125556351 in words is "one billion, one hundred twenty-five million, five hundred fifty-six thousand, three hundred fifty-one".