25748406077 has 2 divisors, whose sum is σ = 25748406078. Its totient is φ = 25748406076.

The previous prime is 25748406029. The next prime is 25748406121. The reversal of 25748406077 is 77060484752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25075989316 + 672416761 = 158354^2 + 25931^2 .

It is a cyclic number.

It is not a de Polignac number, because 25748406077 - 2⁸ = 25748405821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25748406577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874203038 + 12874203039.

It is an arithmetic number, because the mean of its divisors is an integer number (12874203039).

Almost surely, 2^25748406077 is an apocalyptic number.

It is an amenable number.

25748406077 is a deficient number, since it is larger than the sum of its proper divisors (1).

25748406077 is an equidigital number, since it uses as much as digits as its factorization.

25748406077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 25748406077 in words is "twenty-five billion, seven hundred forty-eight million, four hundred six thousand, seventy-seven".