25719601 has 2 divisors, whose sum is σ = 25719602. Its totient is φ = 25719600.

The previous prime is 25719593. The next prime is 25719611. The reversal of 25719601 is 10691752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 4004001 = 4660^2 + 2001^2 .

It is a cyclic number.

It is not a de Polignac number, because 25719601 - 2³ = 25719593 is a prime.

It is a super-2 number, since 2×25719601² = 1322995751198402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25719611) 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, 12859800 + 12859801.

It is an arithmetic number, because the mean of its divisors is an integer number (12859801).

Almost surely, 2^25719601 is an apocalyptic number.

It is an amenable number.

25719601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25719601 is an equidigital number, since it uses as much as digits as its factorization.

25719601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 25719601 is about 5071.4495955299. The cubic root of 25719601 is about 295.1807797419.

The spelling of 25719601 in words is "twenty-five million, seven hundred nineteen thousand, six hundred one".