7255920431 has 4 divisors (see below), whose sum is σ = 7637811000. Its totient is φ = 6874029864.

The previous prime is 7255920407. The next prime is 7255920443. The reversal of 7255920431 is 1340295527.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7255920431 is a prime.

It is a super-2 number, since 2×7255920431² (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 (7255920131) 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 3 ways as a sum of consecutive naturals, for example, 190945256 + ... + 190945293.

It is an arithmetic number, because the mean of its divisors is an integer number (1909452750).

Almost surely, 2^7255920431 is an apocalyptic number.

7255920431 is a deficient number, since it is larger than the sum of its proper divisors (381890569).

7255920431 is a wasteful number, since it uses less digits than its factorization.

7255920431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381890568.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 7255920431 is about 85181.6907028735. The cubic root of 7255920431 is about 1935.9650104915.

The spelling of 7255920431 in words is "seven billion, two hundred fifty-five million, nine hundred twenty thousand, four hundred thirty-one".