25470547 has 2 divisors, whose sum is σ = 25470548. Its totient is φ = 25470546.

The previous prime is 25470527. The next prime is 25470559. The reversal of 25470547 is 74507452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25470547 - 2¹⁵ = 25437779 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_1593466 and since 25470547 and 1593466 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25470527) 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, 12735273 + 12735274.

It is an arithmetic number, because the mean of its divisors is an integer number (12735274).

Almost surely, 2^25470547 is an apocalyptic number.

25470547 is a deficient number, since it is larger than the sum of its proper divisors (1).

25470547 is an equidigital number, since it uses as much as digits as its factorization.

25470547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 25470547 is about 5046.8353450454. The cubic root of 25470547 is about 294.2249000302.

Adding to 25470547 its reverse (74507452), we get a palindrome (99977999).

It can be divided in two parts, 25 and 470547, that multiplied together give a triangular number (11763675 = T₄₈₅₀).

The spelling of 25470547 in words is "twenty-five million, four hundred seventy thousand, five hundred forty-seven".