125453202354521 has 2 divisors, whose sum is σ = 125453202354522. Its totient is φ = 125453202354520.

The previous prime is 125453202354497. The next prime is 125453202354533.

125453202354521 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103238523924496 + 22214678430025 = 10160636^2 + 4713245^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125453202354521 is a prime.

It is a super-4 number, since 4×125453202354521⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not a weakly prime, because it can be changed into another prime (125453202354121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62726601177260 + 62726601177261.

It is an arithmetic number, because the mean of its divisors is an integer number (62726601177261).

Almost surely, 2^{125453202354521} is an apocalyptic number.

It is an amenable number.

125453202354521 is a deficient number, since it is larger than the sum of its proper divisors (1).

125453202354521 is an equidigital number, since it uses as much as digits as its factorization.

125453202354521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 44.

It can be divided in two parts, 12545320 and 2354521, that added together give a palindrome (14899841).

The spelling of 125453202354521 in words is "one hundred twenty-five trillion, four hundred fifty-three billion, two hundred two million, three hundred fifty-four thousand, five hundred twenty-one".