25149149 has 2 divisors, whose sum is σ = 25149150. Its totient is φ = 25149148.

The previous prime is 25149139. The next prime is 25149151. The reversal of 25149149 is 94194152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14212900 + 10936249 = 3770^2 + 3307^2 .

It is a cyclic number.

It is not a de Polignac number, because 25149149 - 2¹² = 25145053 is a prime.

Together with 25149151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25149139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12574574 + 12574575.

It is an arithmetic number, because the mean of its divisors is an integer number (12574575).

Almost surely, 2^25149149 is an apocalyptic number.

It is an amenable number.

25149149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25149149 is an equidigital number, since it uses as much as digits as its factorization.

25149149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 25149149 is about 5014.8927206871. The cubic root of 25149149 is about 292.9821070274.

The spelling of 25149149 in words is "twenty-five million, one hundred forty-nine thousand, one hundred forty-nine".