25490051 has 2 divisors, whose sum is σ = 25490052. Its totient is φ = 25490050.

The previous prime is 25490041. The next prime is 25490053. The reversal of 25490051 is 15009452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25490051 - 2¹⁸ = 25227907 is a prime.

Together with 25490053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25490051.

It is not a weakly prime, because it can be changed into another prime (25490053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12745025 + 12745026.

It is an arithmetic number, because the mean of its divisors is an integer number (12745026).

Almost surely, 2^25490051 is an apocalyptic number.

25490051 is a deficient number, since it is larger than the sum of its proper divisors (1).

25490051 is an equidigital number, since it uses as much as digits as its factorization.

25490051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 25490051 is about 5048.7672752861. The cubic root of 25490051 is about 294.2999815000.

The spelling of 25490051 in words is "twenty-five million, four hundred ninety thousand, fifty-one".