25193145511 has 2 divisors, whose sum is σ = 25193145512. Its totient is φ = 25193145510.

The previous prime is 25193145463. The next prime is 25193145577. The reversal of 25193145511 is 11554139152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25193145511 - 2²¹ = 25191048359 is a prime.

It is a super-2 number, since 2×25193145511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25193145011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12596572755 + 12596572756.

It is an arithmetic number, because the mean of its divisors is an integer number (12596572756).

Almost surely, 2^25193145511 is an apocalyptic number.

25193145511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25193145511 is an equidigital number, since it uses as much as digits as its factorization.

25193145511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 37.

The spelling of 25193145511 in words is "twenty-five billion, one hundred ninety-three million, one hundred forty-five thousand, five hundred eleven".