1121625777 has 8 divisors (see below), whose sum is σ = 1495668064. Its totient is φ = 747667008.

The previous prime is 1121625749. The next prime is 1121625781. The reversal of 1121625777 is 7775261211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121625777 - 2¹⁰ = 1121624753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121625707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24633 + ... + 53385.

It is an arithmetic number, because the mean of its divisors is an integer number (186958508).

Almost surely, 2^1121625777 is an apocalyptic number.

It is an amenable number.

1121625777 is a deficient number, since it is larger than the sum of its proper divisors (374042287).

1121625777 is a wasteful number, since it uses less digits than its factorization.

1121625777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41759.

The product of its digits is 41160, while the sum is 39.

The square root of 1121625777 is about 33490.6819428927. The cubic root of 1121625777 is about 1039.0010677564.

Adding to 1121625777 its reverse (7775261211), we get a palindrome (8896886988).

The spelling of 1121625777 in words is "one billion, one hundred twenty-one million, six hundred twenty-five thousand, seven hundred seventy-seven".