1142355225 has 24 divisors (see below), whose sum is σ = 2060394912. Its totient is φ = 553868800.

The previous prime is 1142355223. The next prime is 1142355233. The reversal of 1142355225 is 5225532411.

It is not a de Polignac number, because 1142355225 - 2¹ = 1142355223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142355192 and 1142355201.

It is not an unprimeable number, because it can be changed into a prime (1142355223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691512 + ... + 693161.

It is an arithmetic number, because the mean of its divisors is an integer number (85849788).

Almost surely, 2^1142355225 is an apocalyptic number.

1142355225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142355225 is a deficient number, since it is larger than the sum of its proper divisors (918039687).

1142355225 is a wasteful number, since it uses less digits than its factorization.

1142355225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384697 (or 1384692 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 1142355225 is about 33798.7459086872. The cubic root of 1142355225 is about 1045.3628388310.

Adding to 1142355225 its reverse (5225532411), we get a palindrome (6367887636).

The spelling of 1142355225 in words is "one billion, one hundred forty-two million, three hundred fifty-five thousand, two hundred twenty-five".