25285237 has 2 divisors, whose sum is σ = 25285238. Its totient is φ = 25285236.

The previous prime is 25285213. The next prime is 25285241. The reversal of 25285237 is 73258252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 9492561 = 3974^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 25285237 - 2⁷ = 25285109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25285937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12642618 + 12642619.

It is an arithmetic number, because the mean of its divisors is an integer number (12642619).

Almost surely, 2^25285237 is an apocalyptic number.

It is an amenable number.

25285237 is a deficient number, since it is larger than the sum of its proper divisors (1).

25285237 is an equidigital number, since it uses as much as digits as its factorization.

25285237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 25285237 is about 5028.4428007088. The cubic root of 25285237 is about 293.5096218502.

The spelling of 25285237 in words is "twenty-five million, two hundred eighty-five thousand, two hundred thirty-seven".