1125008749 has 2 divisors, whose sum is σ = 1125008750. Its totient is φ = 1125008748.

The previous prime is 1125008747. The next prime is 1125008783. The reversal of 1125008749 is 9478005211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596238724 + 528770025 = 24418^2 + 22995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125008749 - 2¹ = 1125008747 is a prime.

Together with 1125008747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125008747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562504374 + 562504375.

It is an arithmetic number, because the mean of its divisors is an integer number (562504375).

Almost surely, 2^1125008749 is an apocalyptic number.

It is an amenable number.

1125008749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125008749 is an equidigital number, since it uses as much as digits as its factorization.

1125008749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1125008749 is about 33541.1500846348. The cubic root of 1125008749 is about 1040.0446076158.

The spelling of 1125008749 in words is "one billion, one hundred twenty-five million, eight thousand, seven hundred forty-nine".