2505012645 has 16 divisors (see below), whose sum is σ = 4243786560. Its totient is φ = 1257417984.

The previous prime is 2505012623. The next prime is 2505012647. The reversal of 2505012645 is 5462105052.

It is not a de Polignac number, because 2505012645 - 2⁵ = 2505012613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505012647) 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, 4911535 + ... + 4912044.

It is an arithmetic number, because the mean of its divisors is an integer number (265236660).

Almost surely, 2^2505012645 is an apocalyptic number.

It is an amenable number.

2505012645 is a deficient number, since it is larger than the sum of its proper divisors (1738773915).

2505012645 is a wasteful number, since it uses less digits than its factorization.

2505012645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9823604.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2505012645 is about 50050.1013485487. The cubic root of 2505012645 is about 1358.1152968393.

Adding to 2505012645 its reverse (5462105052), we get a palindrome (7967117697).

The spelling of 2505012645 in words is "two billion, five hundred five million, twelve thousand, six hundred forty-five".