2157825253453 has 2 divisors, whose sum is σ = 2157825253454. Its totient is φ = 2157825253452.

The previous prime is 2157825253427. The next prime is 2157825253487. The reversal of 2157825253453 is 3543525287512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1629916929124 + 527908324329 = 1276682^2 + 726573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2157825253453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2157825253453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157825253853) 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 as a sum of consecutive naturals, namely, 1078912626726 + 1078912626727.

It is an arithmetic number, because the mean of its divisors is an integer number (1078912626727).

Almost surely, 2^{2157825253453} is an apocalyptic number.

It is an amenable number.

2157825253453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157825253453 is an equidigital number, since it uses as much as digits as its factorization.

2157825253453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080000, while the sum is 52.

The spelling of 2157825253453 in words is "two trillion, one hundred fifty-seven billion, eight hundred twenty-five million, two hundred fifty-three thousand, four hundred fifty-three".