25187904011 has 2 divisors, whose sum is σ = 25187904012. Its totient is φ = 25187904010.

The previous prime is 25187903969. The next prime is 25187904017. The reversal of 25187904011 is 11040978152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25187904011 - 2⁶ = 25187903947 is a prime.

It is not a weakly prime, because it can be changed into another prime (25187904017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12593952005 + 12593952006.

It is an arithmetic number, because the mean of its divisors is an integer number (12593952006).

Almost surely, 2^25187904011 is an apocalyptic number.

25187904011 is a deficient number, since it is larger than the sum of its proper divisors (1).

25187904011 is an equidigital number, since it uses as much as digits as its factorization.

25187904011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 25187904011 in words is "twenty-five billion, one hundred eighty-seven million, nine hundred four thousand, eleven".