25123171 has 2 divisors, whose sum is σ = 25123172. Its totient is φ = 25123170.

The previous prime is 25123159. The next prime is 25123181. The reversal of 25123171 is 17132152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25123171 - 2¹¹ = 25121123 is a prime.

It is not a weakly prime, because it can be changed into another prime (25123181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561585 + 12561586.

It is an arithmetic number, because the mean of its divisors is an integer number (12561586).

Almost surely, 2^25123171 is an apocalyptic number.

25123171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25123171 is an equidigital number, since it uses as much as digits as its factorization.

25123171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 22.

The square root of 25123171 is about 5012.3019661629. The cubic root of 25123171 is about 292.8811929259.

The spelling of 25123171 in words is "twenty-five million, one hundred twenty-three thousand, one hundred seventy-one".