1125309953 has 2 divisors, whose sum is σ = 1125309954. Its totient is φ = 1125309952.

The previous prime is 1125309943. The next prime is 1125309967. The reversal of 1125309953 is 3599035211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937400689 + 187909264 = 30617^2 + 13708^2 .

It is an emirp because it is prime and its reverse (3599035211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1125309953 - 2¹⁸ = 1125047809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125309923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562654976 + 562654977.

It is an arithmetic number, because the mean of its divisors is an integer number (562654977).

Almost surely, 2^1125309953 is an apocalyptic number.

It is an amenable number.

1125309953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125309953 is an equidigital number, since it uses as much as digits as its factorization.

1125309953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 1125309953 is about 33545.6398508062. The cubic root of 1125309953 is about 1040.1374180474.

The spelling of 1125309953 in words is "one billion, one hundred twenty-five million, three hundred nine thousand, nine hundred fifty-three".