1142223525 has 30 divisors (see below), whose sum is σ = 2115796562. Its totient is φ = 609184800.

The previous prime is 1142223503. The next prime is 1142223527. The reversal of 1142223525 is 5253222411.

1142223525 is a `hidden beast` number, since 1 + 1 + 422 + 235 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10439361 + 1131784164 = 3231^2 + 33642^2 .

It is not a de Polignac number, because 1142223525 - 2⁶ = 1142223461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142223527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 280006 + ... + 284055.

Almost surely, 2^1142223525 is an apocalyptic number.

1142223525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142223525 is a deficient number, since it is larger than the sum of its proper divisors (973573037).

1142223525 is an equidigital number, since it uses as much as digits as its factorization.

1142223525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564083 (or 564069 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1142223525 is about 33796.7975553898. The cubic root of 1142223525 is about 1045.3226646441.

Adding to 1142223525 its reverse (5253222411), we get a palindrome (6395445936).

The spelling of 1142223525 in words is "one billion, one hundred forty-two million, two hundred twenty-three thousand, five hundred twenty-five".