25092649 has 2 divisors, whose sum is σ = 25092650. Its totient is φ = 25092648.

The previous prime is 25092647. The next prime is 25092713. The reversal of 25092649 is 94629052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 4326400 = 4557^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 25092649 - 2¹ = 25092647 is a prime.

Together with 25092647, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25092647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12546324 + 12546325.

It is an arithmetic number, because the mean of its divisors is an integer number (12546325).

Almost surely, 2^25092649 is an apocalyptic number.

It is an amenable number.

25092649 is a deficient number, since it is larger than the sum of its proper divisors (1).

25092649 is an equidigital number, since it uses as much as digits as its factorization.

25092649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 25092649 is about 5009.2563320317. The cubic root of 25092649 is about 292.7625382873.

The spelling of 25092649 in words is "twenty-five million, ninety-two thousand, six hundred forty-nine".