25219651 has 2 divisors, whose sum is σ = 25219652. Its totient is φ = 25219650.

The previous prime is 25219637. The next prime is 25219673. The reversal of 25219651 is 15691252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25219651 - 2¹⁵ = 25186883 is a prime.

It is not a weakly prime, because it can be changed into another prime (25219351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12609825 + 12609826.

It is an arithmetic number, because the mean of its divisors is an integer number (12609826).

Almost surely, 2^25219651 is an apocalyptic number.

25219651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25219651 is an equidigital number, since it uses as much as digits as its factorization.

25219651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 25219651 is about 5021.9170642296. The cubic root of 25219651 is about 293.2556292401.

The spelling of 25219651 in words is "twenty-five million, two hundred nineteen thousand, six hundred fifty-one".