25287701 has 2 divisors, whose sum is σ = 25287702. Its totient is φ = 25287700.

The previous prime is 25287697. The next prime is 25287719. The reversal of 25287701 is 10778252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 8844676 = 4055^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 25287701 - 2² = 25287697 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25287751) 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, 12643850 + 12643851.

It is an arithmetic number, because the mean of its divisors is an integer number (12643851).

Almost surely, 2^25287701 is an apocalyptic number.

It is an amenable number.

25287701 is a deficient number, since it is larger than the sum of its proper divisors (1).

25287701 is an equidigital number, since it uses as much as digits as its factorization.

25287701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 25287701 is about 5028.6878010073. The cubic root of 25287701 is about 293.5191555321.

The spelling of 25287701 in words is "twenty-five million, two hundred eighty-seven thousand, seven hundred one".