25752799249 has 8 divisors (see below), whose sum is σ = 25892556872. Its totient is φ = 25613107200.

The previous prime is 25752799199. The next prime is 25752799283. The reversal of 25752799249 is 94299725752.

It can be written as a sum of positive squares in 4 ways, for example, as 6350400 + 25746448849 = 2520^2 + 160457^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-25752799249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25752799049) 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, 912697 + ... + 940489.

It is an arithmetic number, because the mean of its divisors is an integer number (3236569609).

Almost surely, 2^25752799249 is an apocalyptic number.

It is an amenable number.

25752799249 is a deficient number, since it is larger than the sum of its proper divisors (139757623).

25752799249 is a wasteful number, since it uses less digits than its factorization.

25752799249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32787.

The product of its digits is 28576800, while the sum is 61.

The spelling of 25752799249 in words is "twenty-five billion, seven hundred fifty-two million, seven hundred ninety-nine thousand, two hundred forty-nine".