25250104409 has 2 divisors, whose sum is σ = 25250104410. Its totient is φ = 25250104408.

The previous prime is 25250104349. The next prime is 25250104441. The reversal of 25250104409 is 90440105252.

It is an a-pointer prime, because the next prime (25250104441) can be obtained adding 25250104409 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15290064409 + 9960040000 = 123653^2 + 99800^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250104409 - 2¹² = 25250100313 is a prime.

It is not a weakly prime, because it can be changed into another prime (25250104489) 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, 12625052204 + 12625052205.

It is an arithmetic number, because the mean of its divisors is an integer number (12625052205).

Almost surely, 2^25250104409 is an apocalyptic number.

It is an amenable number.

25250104409 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250104409 is an equidigital number, since it uses as much as digits as its factorization.

25250104409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 25250104409 in words is "twenty-five billion, two hundred fifty million, one hundred four thousand, four hundred nine".