20125453 has 2 divisors, whose sum is σ = 20125454. Its totient is φ = 20125452.

The previous prime is 20125451. The next prime is 20125471. The reversal of 20125453 is 35452102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 4656964 = 3933^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125453 - 2¹ = 20125451 is a prime.

Together with 20125451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062726 + 10062727.

It is an arithmetic number, because the mean of its divisors is an integer number (10062727).

Almost surely, 2^20125453 is an apocalyptic number.

It is an amenable number.

20125453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125453 is an equidigital number, since it uses as much as digits as its factorization.

20125453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20125453 is about 4486.1401003535. The cubic root of 20125453 is about 272.0081321459.

Adding to 20125453 its reverse (35452102), we get a palindrome (55577555).

The spelling of 20125453 in words is "twenty million, one hundred twenty-five thousand, four hundred fifty-three".