1121142425 has 12 divisors (see below), whose sum is σ = 1497156780. Its totient is φ = 827920320.

The previous prime is 1121142413. The next prime is 1121142427. The reversal of 1121142425 is 5242411211.

It can be written as a sum of positive squares in 6 ways, for example, as 101042704 + 1020099721 = 10052^2 + 31939^2 .

It is not a de Polignac number, because 1121142425 - 2⁶ = 1121142361 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121142425.

It is not an unprimeable number, because it can be changed into a prime (1121142427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1724510 + ... + 1725159.

It is an arithmetic number, because the mean of its divisors is an integer number (124763065).

Almost surely, 2^1121142425 is an apocalyptic number.

It is an amenable number.

1121142425 is a deficient number, since it is larger than the sum of its proper divisors (376014355).

1121142425 is a wasteful number, since it uses less digits than its factorization.

1121142425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449692 (or 3449687 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 1121142425 is about 33483.4649491357. The cubic root of 1121142425 is about 1038.8517977083.

Adding to 1121142425 its reverse (5242411211), we get a palindrome (6363553636).

The spelling of 1121142425 in words is "one billion, one hundred twenty-one million, one hundred forty-two thousand, four hundred twenty-five".