25161679 has 2 divisors, whose sum is σ = 25161680. Its totient is φ = 25161678.

The previous prime is 25161673. The next prime is 25161727. The reversal of 25161679 is 97616152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25161679 - 2⁷ = 25161551 is a prime.

It is a super-2 number, since 2×25161679² = 1266220180198082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25161673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580839 + 12580840.

It is an arithmetic number, because the mean of its divisors is an integer number (12580840).

Almost surely, 2^25161679 is an apocalyptic number.

25161679 is a deficient number, since it is larger than the sum of its proper divisors (1).

25161679 is an equidigital number, since it uses as much as digits as its factorization.

25161679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 25161679 is about 5016.1418440869. The cubic root of 25161679 is about 293.0307562056.

It can be divided in two parts, 251616 and 79, that added together give a triangular number (251695 = T₇₀₉).

The spelling of 25161679 in words is "twenty-five million, one hundred sixty-one thousand, six hundred seventy-nine".