25527779 has 2 divisors, whose sum is σ = 25527780. Its totient is φ = 25527778.

The previous prime is 25527763. The next prime is 25527791. The reversal of 25527779 is 97772552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25527779 - 2⁴ = 25527763 is a prime.

It is not a weakly prime, because it can be changed into another prime (25527709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763889 + 12763890.

It is an arithmetic number, because the mean of its divisors is an integer number (12763890).

Almost surely, 2^25527779 is an apocalyptic number.

25527779 is a deficient number, since it is larger than the sum of its proper divisors (1).

25527779 is an equidigital number, since it uses as much as digits as its factorization.

25527779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 308700, while the sum is 44.

The square root of 25527779 is about 5052.5022513602. The cubic root of 25527779 is about 294.4451083988.

The spelling of 25527779 in words is "twenty-five million, five hundred twenty-seven thousand, seven hundred seventy-nine".