1142545225 has 12 divisors (see below), whose sum is σ = 1417196124. Its totient is φ = 913752320.

The previous prime is 1142545211. The next prime is 1142545247. The reversal of 1142545225 is 5225452411.

It can be written as a sum of positive squares in 6 ways, for example, as 209120521 + 933424704 = 14461^2 + 30552^2 .

It is not a de Polignac number, because 1142545225 - 2⁵ = 1142545193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118797 + ... + 128053.

It is an arithmetic number, because the mean of its divisors is an integer number (118099677).

Almost surely, 2^1142545225 is an apocalyptic number.

It is an amenable number.

1142545225 is a deficient number, since it is larger than the sum of its proper divisors (274650899).

1142545225 is an equidigital number, since it uses as much as digits as its factorization.

1142545225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14204 (or 14199 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 1142545225 is about 33801.5565469994. The cubic root of 1142545225 is about 1045.4207915951.

Adding to 1142545225 its reverse (5225452411), we get a palindrome (6367997636).

The spelling of 1142545225 in words is "one billion, one hundred forty-two million, five hundred forty-five thousand, two hundred twenty-five".