25911380527 has 2 divisors, whose sum is σ = 25911380528. Its totient is φ = 25911380526.

The previous prime is 25911380513. The next prime is 25911380609. The reversal of 25911380527 is 72508311952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25911380527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25911380827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12955690263 + 12955690264.

It is an arithmetic number, because the mean of its divisors is an integer number (12955690264).

Almost surely, 2^25911380527 is an apocalyptic number.

25911380527 is a deficient number, since it is larger than the sum of its proper divisors (1).

25911380527 is an equidigital number, since it uses as much as digits as its factorization.

25911380527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 25911380527 in words is "twenty-five billion, nine hundred eleven million, three hundred eighty thousand, five hundred twenty-seven".