2145156234325 has 48 divisors (see below), whose sum is σ = 2920697108560. Its totient is φ = 1553398456320.

The previous prime is 2145156234323. The next prime is 2145156234359. The reversal of 2145156234325 is 5234326515412.

It can be written as a sum of positive squares in 24 ways, for example, as 2063311034929 + 81845199396 = 1436423^2 + 286086^2 .

It is not a de Polignac number, because 2145156234325 - 2¹ = 2145156234323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145156234323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3124087 + ... + 3748363.

Almost surely, 2^{2145156234325} is an apocalyptic number.

2145156234325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145156234325 is a deficient number, since it is larger than the sum of its proper divisors (775540874235).

2145156234325 is a wasteful number, since it uses less digits than its factorization.

2145156234325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624506 (or 624501 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

The spelling of 2145156234325 in words is "two trillion, one hundred forty-five billion, one hundred fifty-six million, two hundred thirty-four thousand, three hundred twenty-five".