2515250645 has 4 divisors (see below), whose sum is σ = 3018300780. Its totient is φ = 2012200512.

The previous prime is 2515250641. The next prime is 2515250663. The reversal of 2515250645 is 5460525152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 586899076 + 1928351569 = 24226^2 + 43913^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515250645 - 2² = 2515250641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515250641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251525060 + ... + 251525069.

It is an arithmetic number, because the mean of its divisors is an integer number (754575195).

Almost surely, 2^2515250645 is an apocalyptic number.

It is an amenable number.

2515250645 is a deficient number, since it is larger than the sum of its proper divisors (503050135).

2515250645 is an equidigital number, since it uses as much as digits as its factorization.

2515250645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503050134.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 2515250645 is about 50152.2745745395. The cubic root of 2515250645 is about 1359.9629900900.

Adding to 2515250645 its reverse (5460525152), we get a palindrome (7975775797).

The spelling of 2515250645 in words is "two billion, five hundred fifteen million, two hundred fifty thousand, six hundred forty-five".