2445721125 has 16 divisors (see below), whose sum is σ = 4069680576. Its totient is φ = 1304384400.

The previous prime is 2445721121. The next prime is 2445721141. The reversal of 2445721125 is 5211275442.

2445721125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2445721125 - 2² = 2445721121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445721121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3260587 + ... + 3261336.

It is an arithmetic number, because the mean of its divisors is an integer number (254355036).

Almost surely, 2^2445721125 is an apocalyptic number.

2445721125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2445721125 is a deficient number, since it is larger than the sum of its proper divisors (1623959451).

2445721125 is an equidigital number, since it uses as much as digits as its factorization.

2445721125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521941 (or 6521931 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 2445721125 is about 49454.2326297760. The cubic root of 2445721125 is about 1347.3144829925.

Adding to 2445721125 its reverse (5211275442), we get a palindrome (7656996567).

The spelling of 2445721125 in words is "two billion, four hundred forty-five million, seven hundred twenty-one thousand, one hundred twenty-five".