31425278895757 has 2 divisors, whose sum is σ = 31425278895758. Its totient is φ = 31425278895756.

The previous prime is 31425278895737. The next prime is 31425278895797. The reversal of 31425278895757 is 75759887252413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29045136537316 + 2380142358441 = 5389354^2 + 1542771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31425278895757 is a prime.

It is a super-2 number, since 2×31425278895757² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31425278895757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31425278895737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712639447878 + 15712639447879.

It is an arithmetic number, because the mean of its divisors is an integer number (15712639447879).

Almost surely, 2^{31425278895757} is an apocalyptic number.

It is an amenable number.

31425278895757 is a deficient number, since it is larger than the sum of its proper divisors (1).

31425278895757 is an equidigital number, since it uses as much as digits as its factorization.

31425278895757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408000, while the sum is 73.

The spelling of 31425278895757 in words is "thirty-one trillion, four hundred twenty-five billion, two hundred seventy-eight million, eight hundred ninety-five thousand, seven hundred fifty-seven".