1572255615257 has 2 divisors, whose sum is σ = 1572255615258. Its totient is φ = 1572255615256.

The previous prime is 1572255615247. The next prime is 1572255615269. The reversal of 1572255615257 is 7525165522751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1532695996441 + 39559618816 = 1238021^2 + 198896^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572255615257 - 2¹⁸ = 1572255353113 is a prime.

It is a super-2 number, since 2×1572255615257² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1572255615199 and 1572255615208.

It is not a weakly prime, because it can be changed into another prime (1572255615247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786127807628 + 786127807629.

It is an arithmetic number, because the mean of its divisors is an integer number (786127807629).

Almost surely, 2^{1572255615257} is an apocalyptic number.

It is an amenable number.

1572255615257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572255615257 is an equidigital number, since it uses as much as digits as its factorization.

1572255615257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7350000, while the sum is 53.

The spelling of 1572255615257 in words is "one trillion, five hundred seventy-two billion, two hundred fifty-five million, six hundred fifteen thousand, two hundred fifty-seven".