6125656645 has 4 divisors (see below), whose sum is σ = 7350787980. Its totient is φ = 4900525312.

The previous prime is 6125656643. The next prime is 6125656657. The reversal of 6125656645 is 5466565216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2624922756 + 3500733889 = 51234^2 + 59167^2 .

It is a cyclic number.

It is not a de Polignac number, because 6125656645 - 2¹ = 6125656643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6125656595 and 6125656604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6125656643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612565660 + ... + 612565669.

It is an arithmetic number, because the mean of its divisors is an integer number (1837696995).

Almost surely, 2^6125656645 is an apocalyptic number.

It is an amenable number.

6125656645 is a deficient number, since it is larger than the sum of its proper divisors (1225131335).

6125656645 is a wasteful number, since it uses less digits than its factorization.

6125656645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225131334.

The product of its digits is 1296000, while the sum is 46.

The square root of 6125656645 is about 78266.5742510812. The cubic root of 6125656645 is about 1829.7182367512.

The spelling of 6125656645 in words is "six billion, one hundred twenty-five million, six hundred fifty-six thousand, six hundred forty-five".