25742737 has 2 divisors, whose sum is σ = 25742738. Its totient is φ = 25742736.

The previous prime is 25742729. The next prime is 25742771. The reversal of 25742737 is 73724752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25010001 + 732736 = 5001^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 25742737 - 2³ = 25742729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25742696 and 25742705.

It is not a weakly prime, because it can be changed into another prime (25742797) 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, 12871368 + 12871369.

It is an arithmetic number, because the mean of its divisors is an integer number (12871369).

Almost surely, 2^25742737 is an apocalyptic number.

It is an amenable number.

25742737 is a deficient number, since it is larger than the sum of its proper divisors (1).

25742737 is an equidigital number, since it uses as much as digits as its factorization.

25742737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 37.

The square root of 25742737 is about 5073.7300874209. The cubic root of 25742737 is about 295.2692629158.

The spelling of 25742737 in words is "twenty-five million, seven hundred forty-two thousand, seven hundred thirty-seven".