25222151 has 2 divisors, whose sum is σ = 25222152. Its totient is φ = 25222150.

The previous prime is 25222129. The next prime is 25222159. The reversal of 25222151 is 15122252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25222151 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25222159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12611075 + 12611076.

It is an arithmetic number, because the mean of its divisors is an integer number (12611076).

Almost surely, 2^25222151 is an apocalyptic number.

25222151 is a deficient number, since it is larger than the sum of its proper divisors (1).

25222151 is an equidigital number, since it uses as much as digits as its factorization.

25222151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 20.

The square root of 25222151 is about 5022.1659669907. The cubic root of 25222151 is about 293.2653189704.

The spelling of 25222151 in words is "twenty-five million, two hundred twenty-two thousand, one hundred fifty-one".