25895531 has 2 divisors, whose sum is σ = 25895532. Its totient is φ = 25895530.

The previous prime is 25895501. The next prime is 25895533. The reversal of 25895531 is 13559852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25895531 is a prime.

It is a super-2 number, since 2×25895531² = 1341157051543922, which contains 22 as substring.

Together with 25895533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25895533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12947765 + 12947766.

It is an arithmetic number, because the mean of its divisors is an integer number (12947766).

Almost surely, 2^25895531 is an apocalyptic number.

25895531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25895531 is an equidigital number, since it uses as much as digits as its factorization.

25895531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 38.

The square root of 25895531 is about 5088.7651743817. The cubic root of 25895531 is about 295.8522934530.

The spelling of 25895531 in words is "twenty-five million, eight hundred ninety-five thousand, five hundred thirty-one".