25895006381 has 2 divisors, whose sum is σ = 25895006382. Its totient is φ = 25895006380.

The previous prime is 25895006363. The next prime is 25895006461. The reversal of 25895006381 is 18360059852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15484069225 + 10410937156 = 124435^2 + 102034^2 .

It is a cyclic number.

It is not a de Polignac number, because 25895006381 - 2¹⁸ = 25894744237 is a prime.

It is a super-2 number, since 2×25895006381² (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 (25895006321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12947503190 + 12947503191.

It is an arithmetic number, because the mean of its divisors is an integer number (12947503191).

Almost surely, 2^25895006381 is an apocalyptic number.

It is an amenable number.

25895006381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25895006381 is an equidigital number, since it uses as much as digits as its factorization.

25895006381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 25895006381 in words is "twenty-five billion, eight hundred ninety-five million, six thousand, three hundred eighty-one".