2145533645425 has 6 divisors (see below), whose sum is σ = 2660461720358. Its totient is φ = 1716426916320.

The previous prime is 2145533645399. The next prime is 2145533645441. The reversal of 2145533645425 is 5245463355412.

It can be written as a sum of positive squares in 3 ways, for example, as 622464193296 + 1523069452129 = 788964^2 + 1234127^2 .

It is not a de Polignac number, because 2145533645425 - 2¹¹ = 2145533643377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42910672884 + ... + 42910672933.

Almost surely, 2^{2145533645425} is an apocalyptic number.

2145533645425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145533645425 is a deficient number, since it is larger than the sum of its proper divisors (514928074933).

2145533645425 is an equidigital number, since it uses as much as digits as its factorization.

2145533645425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85821345827 (or 85821345822 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 49.

The spelling of 2145533645425 in words is "two trillion, one hundred forty-five billion, five hundred thirty-three million, six hundred forty-five thousand, four hundred twenty-five".