2640000002500 has 60 divisors (see below), whose sum is σ = 6597888049984. Its totient is φ = 905142852000.

The previous prime is 2640000002491. The next prime is 2640000002531. The reversal of 2640000002500 is 52000000462.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75411072 + ... + 75446071.

Almost surely, 2^{2640000002500} is an apocalyptic number.

2640000002500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640000002500 is an abundant number, since it is smaller than the sum of its proper divisors (3957888047484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640000002500 is a wasteful number, since it uses less digits than its factorization.

2640000002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150857174 (or 150857157 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 2640000002500 its reverse (52000000462), we get a palindrome (2692000002962).

The spelling of 2640000002500 in words is "two trillion, six hundred forty billion, two thousand, five hundred".