25043149 has 2 divisors, whose sum is σ = 25043150. Its totient is φ = 25043148.

The previous prime is 25043147. The next prime is 25043171. The reversal of 25043149 is 94134052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22867524 + 2175625 = 4782^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 25043149 - 2¹ = 25043147 is a prime.

Together with 25043147, 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 (25043141) 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, 12521574 + 12521575.

It is an arithmetic number, because the mean of its divisors is an integer number (12521575).

Almost surely, 2^25043149 is an apocalyptic number.

It is an amenable number.

25043149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25043149 is an equidigital number, since it uses as much as digits as its factorization.

25043149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25043149 is about 5004.3130397688. The cubic root of 25043149 is about 292.5699017195.

The spelling of 25043149 in words is "twenty-five million, forty-three thousand, one hundred forty-nine".