2500000080 has 80 divisors (see below), whose sum is σ = 7811119104. Its totient is φ = 661409280.

The previous prime is 2500000057. The next prime is 2500000103. The reversal of 2500000080 is 800000052.

It is an interprime number because it is at equal distance from previous prime (2500000057) and next prime (2500000103).

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 (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10531 + ... + 71490.

Almost surely, 2^2500000080 is an apocalyptic number.

2500000080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2500000080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3905559552).

2500000080 is an abundant number, since it is smaller than the sum of its proper divisors (5311119024).

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

2500000080 is a wasteful number, since it uses less digits than its factorization.

2500000080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82164 (or 82158 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2500000080 is about 50000.0008000000. Note that the first 3 decimals coincide. The cubic root of 2500000080 is about 1357.2088227743.

Subtracting from 2500000080 its product of nonzero digits (80), we obtain a square (2500000000 = 50000²).

The spelling of 2500000080 in words is "two billion, five hundred million, eighty", and thus it is an aban number.