2500005530640 has 80 divisors (see below), whose sum is σ = 7768966147200. Its totient is φ = 665038119936.

The previous prime is 2500005530639. The next prime is 2500005530681. The reversal of 2500005530640 is 460355000052.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2500005530598 and 2500005530607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12636180 + ... + 12832499.

It is an arithmetic number, because the mean of its divisors is an integer number (97112076840).

Almost surely, 2^{2500005530640} is an apocalyptic number.

2500005530640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500005530640 is an abundant number, since it is smaller than the sum of its proper divisors (5268960616560).

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

2500005530640 is a wasteful number, since it uses less digits than its factorization.

2500005530640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25469104 (or 25469098 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 2500005530640 in words is "two trillion, five hundred billion, five million, five hundred thirty thousand, six hundred forty".