6499625231 has 6 divisors (see below), whose sum is σ = 7144216296. Its totient is φ = 5908750100.

The previous prime is 6499625219. The next prime is 6499625243. The reversal of 6499625231 is 1325269946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6499625219) and next prime (6499625243).

It is a de Polignac number, because none of the positive numbers 2^k-6499625231 is a prime.

It is a super-2 number, since 2×6499625231² = 84490256286903606722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6499625281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26857835 + ... + 26858076.

It is an arithmetic number, because the mean of its divisors is an integer number (1190702716).

Almost surely, 2^6499625231 is an apocalyptic number.

6499625231 is a deficient number, since it is larger than the sum of its proper divisors (644591065).

6499625231 is a wasteful number, since it uses less digits than its factorization.

6499625231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53715933 (or 53715922 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 6499625231 is about 80620.2532308104. The cubic root of 6499625231 is about 1866.2197102969.

The spelling of 6499625231 in words is "six billion, four hundred ninety-nine million, six hundred twenty-five thousand, two hundred thirty-one".