6544612425 has 48 divisors (see below), whose sum is σ = 11812521728. Its totient is φ = 3177792000.

The previous prime is 6544612423. The next prime is 6544612457. The reversal of 6544612425 is 5242164456.

It is not a de Polignac number, because 6544612425 - 2¹ = 6544612423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6544612423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25200 + ... + 117150.

Almost surely, 2^6544612425 is an apocalyptic number.

6544612425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6544612425 is a deficient number, since it is larger than the sum of its proper divisors (5267909303).

6544612425 is a wasteful number, since it uses less digits than its factorization.

6544612425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92050 (or 92045 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

The square root of 6544612425 is about 80898.7788844801. The cubic root of 6544612425 is about 1870.5154979241.

The spelling of 6544612425 in words is "six billion, five hundred forty-four million, six hundred twelve thousand, four hundred twenty-five".