7255840919 has 4 divisors (see below), whose sum is σ = 7506042360. Its totient is φ = 7005639480.

The previous prime is 7255840903. The next prime is 7255840961. The reversal of 7255840919 is 9190485527.

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

It is a cyclic number.

It is not a de Polignac number, because 7255840919 - 2⁴ = 7255840903 is a prime.

It is a super-2 number, since 2×7255840919² (a number of 21 digits) 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 (7255840979) 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, 125100677 + ... + 125100734.

It is an arithmetic number, because the mean of its divisors is an integer number (1876510590).

Almost surely, 2^7255840919 is an apocalyptic number.

7255840919 is a deficient number, since it is larger than the sum of its proper divisors (250201441).

7255840919 is a wasteful number, since it uses less digits than its factorization.

7255840919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250201440.

The product of its (nonzero) digits is 907200, while the sum is 50.

The square root of 7255840919 is about 85181.2239815794. The cubic root of 7255840919 is about 1935.9579388864.

The spelling of 7255840919 in words is "seven billion, two hundred fifty-five million, eight hundred forty thousand, nine hundred nineteen".