7725212649 has 48 divisors (see below), whose sum is σ = 14523618240. Its totient is φ = 4013089920.

The previous prime is 7725212623. The next prime is 7725212701. The reversal of 7725212649 is 9462125277.

It is not a de Polignac number, because 7725212649 - 2⁹ = 7725212137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7725202649) 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 47 ways as a sum of consecutive naturals, for example, 250864 + ... + 279969.

It is an arithmetic number, because the mean of its divisors is an integer number (302575380).

Almost surely, 2^7725212649 is an apocalyptic number.

It is an amenable number.

7725212649 is a deficient number, since it is larger than the sum of its proper divisors (6798405591).

7725212649 is a wasteful number, since it uses less digits than its factorization.

7725212649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530867 (or 530854 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 7725212649 is about 87893.1888658046. The cubic root of 7725212649 is about 1976.8337526371.

The spelling of 7725212649 in words is "seven billion, seven hundred twenty-five million, two hundred twelve thousand, six hundred forty-nine".