25027524997949 has 2 divisors, whose sum is σ = 25027524997950. Its totient is φ = 25027524997948.

The previous prime is 25027524997939. The next prime is 25027524997987. The reversal of 25027524997949 is 94979942572052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23154554838724 + 1872970159225 = 4811918^2 + 1368565^2 .

It is a cyclic number.

It is not a de Polignac number, because 25027524997949 - 2¹² = 25027524993853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25027524997939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513762498974 + 12513762498975.

It is an arithmetic number, because the mean of its divisors is an integer number (12513762498975).

Almost surely, 2^{25027524997949} is an apocalyptic number.

It is an amenable number.

25027524997949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25027524997949 is an equidigital number, since it uses as much as digits as its factorization.

25027524997949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1028764800, while the sum is 74.

The spelling of 25027524997949 in words is "twenty-five trillion, twenty-seven billion, five hundred twenty-four million, nine hundred ninety-seven thousand, nine hundred forty-nine".