25057553 has 2 divisors, whose sum is σ = 25057554. Its totient is φ = 25057552.

The previous prime is 25057471. The next prime is 25057573. The reversal of 25057553 is 35575052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 5414929 = 4432^2 + 2327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25057553 is a prime.

It is not a weakly prime, because it can be changed into another prime (25057573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12528776 + 12528777.

It is an arithmetic number, because the mean of its divisors is an integer number (12528777).

Almost surely, 2^25057553 is an apocalyptic number.

It is an amenable number.

25057553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25057553 is an equidigital number, since it uses as much as digits as its factorization.

25057553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26250, while the sum is 32.

The square root of 25057553 is about 5005.7519914594. The cubic root of 25057553 is about 292.6259831808.

The spelling of 25057553 in words is "twenty-five million, fifty-seven thousand, five hundred fifty-three".