2500013649 has 16 divisors (see below), whose sum is σ = 3852351360. Its totient is φ = 1412526720.

The previous prime is 2500013647. The next prime is 2500013651. The reversal of 2500013649 is 9463100052.

It is an interprime number because it is at equal distance from previous prime (2500013647) and next prime (2500013651).

It is not a de Polignac number, because 2500013649 - 2¹ = 2500013647 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2500013647) by changing a digit.

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, 666942 + ... + 670679.

It is an arithmetic number, because the mean of its divisors is an integer number (240771960).

Almost surely, 2^2500013649 is an apocalyptic number.

It is an amenable number.

2500013649 is a deficient number, since it is larger than the sum of its proper divisors (1352337711).

2500013649 is a wasteful number, since it uses less digits than its factorization.

2500013649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337720.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 2500013649 is about 50000.1364898137. The cubic root of 2500013649 is about 1357.2112782320.

The spelling of 2500013649 in words is "two billion, five hundred million, thirteen thousand, six hundred forty-nine".