2545720004 has 12 divisors (see below), whose sum is σ = 4455456684. Its totient is φ = 1272732384.

The previous prime is 2545720003. The next prime is 2545720019. The reversal of 2545720004 is 4000275452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2021401600 + 524318404 = 44960^2 + 22898^2 .

It is not an unprimeable number, because it can be changed into a prime (2545720003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23774 + ... + 75210.

It is an arithmetic number, because the mean of its divisors is an integer number (371288057).

Almost surely, 2^2545720004 is an apocalyptic number.

It is an amenable number.

2545720004 is a deficient number, since it is larger than the sum of its proper divisors (1909736680).

2545720004 is a wasteful number, since it uses less digits than its factorization.

2545720004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63814 (or 63812 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 2545720004 is about 50455.1286193980. The cubic root of 2545720004 is about 1365.4324246384.

Adding to 2545720004 its reverse (4000275452), we get a palindrome (6545995456).

The spelling of 2545720004 in words is "two billion, five hundred forty-five million, seven hundred twenty thousand, four".