25625895091 has 2 divisors, whose sum is σ = 25625895092. Its totient is φ = 25625895090.

The previous prime is 25625895067. The next prime is 25625895103. The reversal of 25625895091 is 19059852652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25625895091 - 2¹⁵ = 25625862323 is a prime.

It is not a weakly prime, because it can be changed into another prime (25625895041) 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, 12812947545 + 12812947546.

It is an arithmetic number, because the mean of its divisors is an integer number (12812947546).

Almost surely, 2^25625895091 is an apocalyptic number.

25625895091 is a deficient number, since it is larger than the sum of its proper divisors (1).

25625895091 is an equidigital number, since it uses as much as digits as its factorization.

25625895091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 25625895091 in words is "twenty-five billion, six hundred twenty-five million, eight hundred ninety-five thousand, ninety-one".