253625609161 has 2 divisors, whose sum is σ = 253625609162. Its totient is φ = 253625609160.

The previous prime is 253625609137. The next prime is 253625609197. The reversal of 253625609161 is 161906526352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155694165561 + 97931443600 = 394581^2 + 312940^2 .

It is a cyclic number.

It is not a de Polignac number, because 253625609161 - 2¹¹ = 253625607113 is a prime.

It is not a weakly prime, because it can be changed into another prime (253625609101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126812804580 + 126812804581.

It is an arithmetic number, because the mean of its divisors is an integer number (126812804581).

Almost surely, 2^253625609161 is an apocalyptic number.

It is an amenable number.

253625609161 is a deficient number, since it is larger than the sum of its proper divisors (1).

253625609161 is an equidigital number, since it uses as much as digits as its factorization.

253625609161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 253625609161 in words is "two hundred fifty-three billion, six hundred twenty-five million, six hundred nine thousand, one hundred sixty-one".