1123625641 has 2 divisors, whose sum is σ = 1123625642. Its totient is φ = 1123625640.

The previous prime is 1123625603. The next prime is 1123625651. The reversal of 1123625641 is 1465263211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808208041 + 315417600 = 28429^2 + 17760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123625641 - 2¹³ = 1123617449 is a prime.

It is a super-2 number, since 2×1123625641² = 2525069162225321762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123625651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561812820 + 561812821.

It is an arithmetic number, because the mean of its divisors is an integer number (561812821).

Almost surely, 2^1123625641 is an apocalyptic number.

It is an amenable number.

1123625641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123625641 is an equidigital number, since it uses as much as digits as its factorization.

1123625641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 1123625641 is about 33520.5256671192. The cubic root of 1123625641 is about 1039.6182156949.

Adding to 1123625641 its reverse (1465263211), we get a palindrome (2588888852).

The spelling of 1123625641 in words is "one billion, one hundred twenty-three million, six hundred twenty-five thousand, six hundred forty-one".