18725453 has 2 divisors, whose sum is σ = 18725454. Its totient is φ = 18725452.

The previous prime is 18725429. The next prime is 18725467. The reversal of 18725453 is 35452781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 1444804 = 4157^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 18725453 - 2²² = 14531149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18725423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9362726 + 9362727.

It is an arithmetic number, because the mean of its divisors is an integer number (9362727).

Almost surely, 2^18725453 is an apocalyptic number.

It is an amenable number.

18725453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18725453 is an equidigital number, since it uses as much as digits as its factorization.

18725453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 18725453 is about 4327.2916472084. The cubic root of 18725453 is about 265.5486579780.

The spelling of 18725453 in words is "eighteen million, seven hundred twenty-five thousand, four hundred fifty-three".