25005779 has 2 divisors, whose sum is σ = 25005780. Its totient is φ = 25005778.

The previous prime is 25005769. The next prime is 25005781. The reversal of 25005779 is 97750052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25005779 - 2¹⁶ = 24940243 is a prime.

Together with 25005781, 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 (25005709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502889 + 12502890.

It is an arithmetic number, because the mean of its divisors is an integer number (12502890).

Almost surely, 2^25005779 is an apocalyptic number.

25005779 is a deficient number, since it is larger than the sum of its proper divisors (1).

25005779 is an equidigital number, since it uses as much as digits as its factorization.

25005779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 25005779 is about 5000.5778666070. The cubic root of 25005779 is about 292.4243026168.

The spelling of 25005779 in words is "twenty-five million, five thousand, seven hundred seventy-nine".