2540000249 has 8 divisors (see below), whose sum is σ = 2590020360. Its totient is φ = 2490057856.

The previous prime is 2540000189. The next prime is 2540000261. The reversal of 2540000249 is 9420000452.

It can be written as a sum of positive squares in 4 ways, for example, as 191628649 + 2348371600 = 13843^2 + 48460^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2540000249 - 2⁸ = 2539999993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540000269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48917 + ... + 86445.

It is an arithmetic number, because the mean of its divisors is an integer number (323752545).

Almost surely, 2^2540000249 is an apocalyptic number.

It is an amenable number.

2540000249 is a deficient number, since it is larger than the sum of its proper divisors (50020111).

2540000249 is a wasteful number, since it uses less digits than its factorization.

2540000249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38859.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2540000249 is about 50398.4151437324. The cubic root of 2540000249 is about 1364.4090343476.

The spelling of 2540000249 in words is "two billion, five hundred forty million, two hundred forty-nine", and thus it is an aban number.