25658058091 has 2 divisors, whose sum is σ = 25658058092. Its totient is φ = 25658058090.

The previous prime is 25658057987. The next prime is 25658058103. The reversal of 25658058091 is 19085085652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25658058091 - 2¹¹ = 25658056043 is a prime.

It is a super-2 number, since 2×25658058091² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25658058691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12829029045 + 12829029046.

It is an arithmetic number, because the mean of its divisors is an integer number (12829029046).

Almost surely, 2^25658058091 is an apocalyptic number.

25658058091 is a deficient number, since it is larger than the sum of its proper divisors (1).

25658058091 is an equidigital number, since it uses as much as digits as its factorization.

25658058091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 25658058091 in words is "twenty-five billion, six hundred fifty-eight million, fifty-eight thousand, ninety-one".