25171151 has 2 divisors, whose sum is σ = 25171152. Its totient is φ = 25171150.

The previous prime is 25171129. The next prime is 25171183. The reversal of 25171151 is 15117152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25171151 - 2¹⁰ = 25170127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25170151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12585575 + 12585576.

It is an arithmetic number, because the mean of its divisors is an integer number (12585576).

Almost surely, 2^25171151 is an apocalyptic number.

25171151 is a deficient number, since it is larger than the sum of its proper divisors (1).

25171151 is an equidigital number, since it uses as much as digits as its factorization.

25171151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 350, while the sum is 23.

The square root of 25171151 is about 5017.0859071776. The cubic root of 25171151 is about 293.0675216259.

The spelling of 25171151 in words is "twenty-five million, one hundred seventy-one thousand, one hundred fifty-one".