6265197409 has 3 divisors (see below), whose sum is σ = 6265276563. Its totient is φ = 6265118256.

The previous prime is 6265197361. The next prime is 6265197443. The reversal of 6265197409 is 9047915626.

It is a happy number.

The square root of 6265197409 is 79153.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4886709025 + 1378488384 = 69905^2 + 37128^2 .

It is not a de Polignac number, because 6265197409 - 2²⁹ = 5728326497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6265197109) 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 2 ways as a sum of consecutive naturals, for example, 39577 + ... + 118729.

It is an arithmetic number, because the mean of its divisors is an integer number (2088425521).

Almost surely, 2^6265197409 is an apocalyptic number.

6265197409 is the 79153-rd square number.

6265197409 is the 39577-th centered octagonal number.

It is an amenable number.

6265197409 is a deficient number, since it is larger than the sum of its proper divisors (79154).

6265197409 is an frugal number, since it uses more digits than its factorization.

6265197409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158306 (or 79153 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The cubic root of 6265197409 is about 1843.5075470536.

Multiplying 6265197409 by its sum of digits (49), we get a square (306994673041 = 554071²).

The spelling of 6265197409 in words is "six billion, two hundred sixty-five million, one hundred ninety-seven thousand, four hundred nine".