25901983 has 2 divisors, whose sum is σ = 25901984. Its totient is φ = 25901982.

The previous prime is 25901977. The next prime is 25901987. The reversal of 25901983 is 38910952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25901983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25901987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12950991 + 12950992.

It is an arithmetic number, because the mean of its divisors is an integer number (12950992).

Almost surely, 2^25901983 is an apocalyptic number.

25901983 is a deficient number, since it is larger than the sum of its proper divisors (1).

25901983 is an equidigital number, since it uses as much as digits as its factorization.

25901983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 25901983 is about 5089.3990804416. The cubic root of 25901983 is about 295.8768624347.

The spelling of 25901983 in words is "twenty-five million, nine hundred one thousand, nine hundred eighty-three".