25520071 has 2 divisors, whose sum is σ = 25520072. Its totient is φ = 25520070.

The previous prime is 25520063. The next prime is 25520123. The reversal of 25520071 is 17002552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25520071 - 2³ = 25520063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25520051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760035 + 12760036.

It is an arithmetic number, because the mean of its divisors is an integer number (12760036).

Almost surely, 2^25520071 is an apocalyptic number.

25520071 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520071 is an equidigital number, since it uses as much as digits as its factorization.

25520071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 25520071 is about 5051.7394034134. The cubic root of 25520071 is about 294.4154699493.

The spelling of 25520071 in words is "twenty-five million, five hundred twenty thousand, seventy-one".