2145363240025 has 12 divisors (see below), whose sum is σ = 2660280403900. Its totient is φ = 1716271246080.

The previous prime is 2145363240023. The next prime is 2145363240029. The reversal of 2145363240025 is 5200423635412.

It can be written as a sum of positive squares in 6 ways, for example, as 291133626624 + 1854229613401 = 539568^2 + 1361701^2 .

It is not a de Polignac number, because 2145363240025 - 2¹ = 2145363240023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145363240023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2035981 + ... + 2904469.

Almost surely, 2^{2145363240025} is an apocalyptic number.

2145363240025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145363240025 is a deficient number, since it is larger than the sum of its proper divisors (514917163875).

2145363240025 is an equidigital number, since it uses as much as digits as its factorization.

2145363240025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967308 (or 967303 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 2145363240025 its reverse (5200423635412), we get a palindrome (7345786875437).

The spelling of 2145363240025 in words is "two trillion, one hundred forty-five billion, three hundred sixty-three million, two hundred forty thousand, twenty-five".