25540223741 has 2 divisors, whose sum is σ = 25540223742. Its totient is φ = 25540223740.

The previous prime is 25540223663. The next prime is 25540223747. The reversal of 25540223741 is 14732204552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17910201241 + 7630022500 = 133829^2 + 87350^2 .

It is a cyclic number.

It is not a de Polignac number, because 25540223741 - 2¹⁰ = 25540222717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25540223747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770111870 + 12770111871.

It is an arithmetic number, because the mean of its divisors is an integer number (12770111871).

Almost surely, 2^25540223741 is an apocalyptic number.

It is an amenable number.

25540223741 is a deficient number, since it is larger than the sum of its proper divisors (1).

25540223741 is an equidigital number, since it uses as much as digits as its factorization.

25540223741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 25540223741 in words is "twenty-five billion, five hundred forty million, two hundred twenty-three thousand, seven hundred forty-one".