25291073 has 2 divisors, whose sum is σ = 25291074. Its totient is φ = 25291072.

The previous prime is 25291067. The next prime is 25291081. The reversal of 25291073 is 37019252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16834609 + 8456464 = 4103^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 25291073 - 2¹² = 25286977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25291003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12645536 + 12645537.

It is an arithmetic number, because the mean of its divisors is an integer number (12645537).

Almost surely, 2^25291073 is an apocalyptic number.

It is an amenable number.

25291073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25291073 is an equidigital number, since it uses as much as digits as its factorization.

25291073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 25291073 is about 5029.0230661630. The cubic root of 25291073 is about 293.5322014341.

The spelling of 25291073 in words is "twenty-five million, two hundred ninety-one thousand, seventy-three".