25400071 has 2 divisors, whose sum is σ = 25400072. Its totient is φ = 25400070.

The previous prime is 25400059. The next prime is 25400083. The reversal of 25400071 is 17000452.

It is a balanced prime because it is at equal distance from previous prime (25400059) and next prime (25400083).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25400071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25400021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700035 + 12700036.

It is an arithmetic number, because the mean of its divisors is an integer number (12700036).

Almost surely, 2^25400071 is an apocalyptic number.

25400071 is a deficient number, since it is larger than the sum of its proper divisors (1).

25400071 is an equidigital number, since it uses as much as digits as its factorization.

25400071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 25400071 is about 5039.8483112094. The cubic root of 25400071 is about 293.9532797866.

The spelling of 25400071 in words is "twenty-five million, four hundred thousand, seventy-one".