1125154361 has 4 divisors (see below), whose sum is σ = 1126395792. Its totient is φ = 1123912932.

The previous prime is 1125154339. The next prime is 1125154363. The reversal of 1125154361 is 1634515211.

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 a de Polignac number, because none of the positive numbers 2^k-1125154361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125154363) 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, 619355 + ... + 621168.

It is an arithmetic number, because the mean of its divisors is an integer number (281598948).

Almost surely, 2^1125154361 is an apocalyptic number.

It is an amenable number.

1125154361 is a deficient number, since it is larger than the sum of its proper divisors (1241431).

1125154361 is an equidigital number, since it uses as much as digits as its factorization.

1125154361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241430.

The product of its digits is 3600, while the sum is 29.

The square root of 1125154361 is about 33543.3206614968. The cubic root of 1125154361 is about 1040.0894773237.

Adding to 1125154361 its reverse (1634515211), we get a palindrome (2759669572).

The spelling of 1125154361 in words is "one billion, one hundred twenty-five million, one hundred fifty-four thousand, three hundred sixty-one".