2145270025 has 12 divisors (see below), whose sum is σ = 2663027100. Its totient is φ = 1714350080.

The previous prime is 2145270011. The next prime is 2145270047. The reversal of 2145270025 is 5200725412.

It can be written as a sum of positive squares in 6 ways, for example, as 336979449 + 1808290576 = 18357^2 + 42524^2 .

It is not a de Polignac number, because 2145270025 - 2⁹ = 2145269513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145269975 and 2145270002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22960 + ... + 69409.

It is an arithmetic number, because the mean of its divisors is an integer number (221918925).

Almost surely, 2^2145270025 is an apocalyptic number.

2145270025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145270025 is a deficient number, since it is larger than the sum of its proper divisors (517757075).

2145270025 is an equidigital number, since it uses as much as digits as its factorization.

2145270025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93308 (or 93303 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2145270025 is about 46317.0597620358. The cubic root of 2145270025 is about 1289.7157046321.

Adding to 2145270025 its reverse (5200725412), we get a palindrome (7345995437).

The spelling of 2145270025 in words is "two billion, one hundred forty-five million, two hundred seventy thousand, twenty-five".