25748406877 has 2 divisors, whose sum is σ = 25748406878. Its totient is φ = 25748406876.

The previous prime is 25748406851. The next prime is 25748406913. The reversal of 25748406877 is 77860484752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20523141081 + 5225265796 = 143259^2 + 72286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25748406877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25748406077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874203438 + 12874203439.

It is an arithmetic number, because the mean of its divisors is an integer number (12874203439).

Almost surely, 2^25748406877 is an apocalyptic number.

It is an amenable number.

25748406877 is a deficient number, since it is larger than the sum of its proper divisors (1).

25748406877 is an equidigital number, since it uses as much as digits as its factorization.

25748406877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21073920, while the sum is 58.

The spelling of 25748406877 in words is "twenty-five billion, seven hundred forty-eight million, four hundred six thousand, eight hundred seventy-seven".