2500081515 has 12 divisors (see below), whose sum is σ = 4333474704. Its totient is φ = 1333376784.

The previous prime is 2500081513. The next prime is 2500081613. The reversal of 2500081515 is 5151800052.

2500081515 is a `hidden beast` number, since 2 + 500 + 0 + 8 + 151 + 5 = 666.

It is not a de Polignac number, because 2500081515 - 2¹ = 2500081513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2500081511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27778639 + ... + 27778728.

It is an arithmetic number, because the mean of its divisors is an integer number (361122892).

Almost surely, 2^2500081515 is an apocalyptic number.

2500081515 is a deficient number, since it is larger than the sum of its proper divisors (1833393189).

2500081515 is a wasteful number, since it uses less digits than its factorization.

2500081515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55557378 (or 55557375 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 2500081515 is about 50000.8151433554. The cubic root of 2500081515 is about 1357.2235591873.

Adding to 2500081515 its reverse (5151800052), we get a palindrome (7651881567).

The spelling of 2500081515 in words is "two billion, five hundred million, eighty-one thousand, five hundred fifteen".