2145124001425 has 6 divisors (see below), whose sum is σ = 2659953761798. Its totient is φ = 1716099201120.

The previous prime is 2145124001417. The next prime is 2145124001441. The reversal of 2145124001425 is 5241004215412.

It can be written as a sum of positive squares in 3 ways, for example, as 273546782289 + 1871577219136 = 523017^2 + 1368056^2 .

It is not a de Polignac number, because 2145124001425 - 2³ = 2145124001417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42902480004 + ... + 42902480053.

Almost surely, 2^{2145124001425} is an apocalyptic number.

2145124001425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145124001425 is a deficient number, since it is larger than the sum of its proper divisors (514829760373).

2145124001425 is an equidigital number, since it uses as much as digits as its factorization.

2145124001425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85804960067 (or 85804960062 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 2145124001425 its reverse (5241004215412), we get a palindrome (7386128216837).

The spelling of 2145124001425 in words is "two trillion, one hundred forty-five billion, one hundred twenty-four million, one thousand, four hundred twenty-five".