7255667645 has 16 divisors (see below), whose sum is σ = 8990714880. Its totient is φ = 5615385600.

The previous prime is 7255667641. The next prime is 7255667659. The reversal of 7255667645 is 5467665527.

It is a happy number.

It is not a de Polignac number, because 7255667645 - 2² = 7255667641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255667641) 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 15 ways as a sum of consecutive naturals, for example, 600221 + ... + 612189.

It is an arithmetic number, because the mean of its divisors is an integer number (561919680).

Almost surely, 2^7255667645 is an apocalyptic number.

It is an amenable number.

7255667645 is a deficient number, since it is larger than the sum of its proper divisors (1735047235).

7255667645 is a wasteful number, since it uses less digits than its factorization.

7255667645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916.

The product of its digits is 10584000, while the sum is 53.

The square root of 7255667645 is about 85180.2068851679. The cubic root of 7255667645 is about 1935.9425281366.

The spelling of 7255667645 in words is "seven billion, two hundred fifty-five million, six hundred sixty-seven thousand, six hundred forty-five".