1225053143 has 4 divisors (see below), whose sum is σ = 1226646960. Its totient is φ = 1223459328.

The previous prime is 1225053131. The next prime is 1225053149. The reversal of 1225053143 is 3413505221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225053143 - 2⁴ = 1225053127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225053149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795755 + ... + 797292.

It is an arithmetic number, because the mean of its divisors is an integer number (306661740).

Almost surely, 2^1225053143 is an apocalyptic number.

1225053143 is a deficient number, since it is larger than the sum of its proper divisors (1593817).

1225053143 is an equidigital number, since it uses as much as digits as its factorization.

1225053143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593816.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1225053143 is about 35000.7591774807. The cubic root of 1225053143 is about 1070.0029530882.

Adding to 1225053143 its reverse (3413505221), we get a palindrome (4638558364).

The spelling of 1225053143 in words is "one billion, two hundred twenty-five million, fifty-three thousand, one hundred forty-three".