25524405161 has 2 divisors, whose sum is σ = 25524405162. Its totient is φ = 25524405160.

The previous prime is 25524405143. The next prime is 25524405169. The reversal of 25524405161 is 16150442552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25446630400 + 77774761 = 159520^2 + 8819^2 .

It is a cyclic number.

It is not a de Polignac number, because 25524405161 - 2¹⁰ = 25524404137 is a prime.

It is not a weakly prime, because it can be changed into another prime (25524405169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762202580 + 12762202581.

It is an arithmetic number, because the mean of its divisors is an integer number (12762202581).

Almost surely, 2^25524405161 is an apocalyptic number.

It is an amenable number.

25524405161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25524405161 is an equidigital number, since it uses as much as digits as its factorization.

25524405161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 25524405161 in words is "twenty-five billion, five hundred twenty-four million, four hundred five thousand, one hundred sixty-one".