25471157 has 2 divisors, whose sum is σ = 25471158. Its totient is φ = 25471156.

The previous prime is 25471091. The next prime is 25471183. The reversal of 25471157 is 75117452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 7612081 = 4226^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 25471157 - 2¹⁴ = 25454773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25471357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12735578 + 12735579.

It is an arithmetic number, because the mean of its divisors is an integer number (12735579).

Almost surely, 2^25471157 is an apocalyptic number.

It is an amenable number.

25471157 is a deficient number, since it is larger than the sum of its proper divisors (1).

25471157 is an equidigital number, since it uses as much as digits as its factorization.

25471157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 25471157 is about 5046.8957785950. The cubic root of 25471157 is about 294.2272488315.

The spelling of 25471157 in words is "twenty-five million, four hundred seventy-one thousand, one hundred fifty-seven".