1225232253145 has 4 divisors (see below), whose sum is σ = 1470278703780. Its totient is φ = 980185802512.

The previous prime is 1225232253127. The next prime is 1225232253151. The reversal of 1225232253145 is 5413522325221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 639137890521 + 586094362624 = 799461^2 + 765568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225232253145 - 2¹⁹ = 1225231728857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122523225310 + ... + 122523225319.

It is an arithmetic number, because the mean of its divisors is an integer number (367569675945).

Almost surely, 2^{1225232253145} is an apocalyptic number.

It is an amenable number.

1225232253145 is a deficient number, since it is larger than the sum of its proper divisors (245046450635).

1225232253145 is an equidigital number, since it uses as much as digits as its factorization.

1225232253145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245046450634.

The product of its digits is 144000, while the sum is 37.

Adding to 1225232253145 its reverse (5413522325221), we get a palindrome (6638754578366).

The spelling of 1225232253145 in words is "one trillion, two hundred twenty-five billion, two hundred thirty-two million, two hundred fifty-three thousand, one hundred forty-five".