25511149 has 2 divisors, whose sum is σ = 25511150. Its totient is φ = 25511148.

The previous prime is 25511113. The next prime is 25511201. The reversal of 25511149 is 94111552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25502500 + 8649 = 5050^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 25511149 - 2⁷ = 25511021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25511249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755574 + 12755575.

It is an arithmetic number, because the mean of its divisors is an integer number (12755575).

Almost surely, 2^25511149 is an apocalyptic number.

It is an amenable number.

25511149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25511149 is an equidigital number, since it uses as much as digits as its factorization.

25511149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 28.

The square root of 25511149 is about 5050.8562640408. The cubic root of 25511149 is about 294.3811560297.

The spelling of 25511149 in words is "twenty-five million, five hundred eleven thousand, one hundred forty-nine".