6625249101 has 24 divisors (see below), whose sum is σ = 9859988216. Its totient is φ = 4284887040.

The previous prime is 6625249097. The next prime is 6625249133. The reversal of 6625249101 is 1019425266.

6625249101 is a `hidden beast` number, since 6 + 625 + 24 + 9 + 1 + 0 + 1 = 666.

6625249101 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 459073476 + 6166175625 = 21426^2 + 78525^2 .

It is not a de Polignac number, because 6625249101 - 2² = 6625249097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625241101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42580 + ... + 122733.

Almost surely, 2^6625249101 is an apocalyptic number.

6625249101 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6625249101 is a deficient number, since it is larger than the sum of its proper divisors (3234739115).

6625249101 is a wasteful number, since it uses less digits than its factorization.

6625249101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165453 (or 165450 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6625249101 is about 81395.6331813937. The cubic root of 6625249101 is about 1878.1664163007.

The spelling of 6625249101 in words is "six billion, six hundred twenty-five million, two hundred forty-nine thousand, one hundred one".