25748402761 has 2 divisors, whose sum is σ = 25748402762. Its totient is φ = 25748402760.

The previous prime is 25748402699. The next prime is 25748402791. The reversal of 25748402761 is 16720484752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25742277136 + 6125625 = 160444^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 25748402761 - 2¹⁵ = 25748369993 is a prime.

It is not a weakly prime, because it can be changed into another prime (25748402791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874201380 + 12874201381.

It is an arithmetic number, because the mean of its divisors is an integer number (12874201381).

Almost surely, 2^25748402761 is an apocalyptic number.

It is an amenable number.

25748402761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25748402761 is an equidigital number, since it uses as much as digits as its factorization.

25748402761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 25748402761 in words is "twenty-five billion, seven hundred forty-eight million, four hundred two thousand, seven hundred sixty-one".