8125623757 has 2 divisors, whose sum is σ = 8125623758. Its totient is φ = 8125623756.

The previous prime is 8125623743. The next prime is 8125623799. The reversal of 8125623757 is 7573265218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6136998921 + 1988624836 = 78339^2 + 44594^2 .

It is a cyclic number.

It is not a de Polignac number, because 8125623757 - 2¹⁹ = 8125099469 is a prime.

It is a super-2 number, since 2×8125623757² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8125623257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062811878 + 4062811879.

It is an arithmetic number, because the mean of its divisors is an integer number (4062811879).

Almost surely, 2^8125623757 is an apocalyptic number.

It is an amenable number.

8125623757 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125623757 is an equidigital number, since it uses as much as digits as its factorization.

8125623757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 8125623757 is about 90142.2418014995. The cubic root of 8125623757 is about 2010.4143232260.

The spelling of 8125623757 in words is "eight billion, one hundred twenty-five million, six hundred twenty-three thousand, seven hundred fifty-seven".