1125363761 has 4 divisors (see below), whose sum is σ = 1125476352. Its totient is φ = 1125251172.

The previous prime is 1125363731. The next prime is 1125363779. The reversal of 1125363761 is 1673635211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125363761 - 2⁶ = 1125363697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125363721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39665 + ... + 61838.

It is an arithmetic number, because the mean of its divisors is an integer number (281369088).

Almost surely, 2^1125363761 is an apocalyptic number.

It is an amenable number.

1125363761 is a deficient number, since it is larger than the sum of its proper divisors (112591).

1125363761 is a wasteful number, since it uses less digits than its factorization.

1125363761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112590.

The product of its digits is 22680, while the sum is 35.

The square root of 1125363761 is about 33546.4418530490. The cubic root of 1125363761 is about 1040.1539962420.

Adding to 1125363761 its reverse (1673635211), we get a palindrome (2798998972).

The spelling of 1125363761 in words is "one billion, one hundred twenty-five million, three hundred sixty-three thousand, seven hundred sixty-one".