25281037 has 2 divisors, whose sum is σ = 25281038. Its totient is φ = 25281036.

The previous prime is 25281031. The next prime is 25281079. The reversal of 25281037 is 73018252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24068836 + 1212201 = 4906^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 25281037 - 2³ = 25281029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25280996 and 25281014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25281031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12640518 + 12640519.

It is an arithmetic number, because the mean of its divisors is an integer number (12640519).

Almost surely, 2^25281037 is an apocalyptic number.

It is an amenable number.

25281037 is a deficient number, since it is larger than the sum of its proper divisors (1).

25281037 is an equidigital number, since it uses as much as digits as its factorization.

25281037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 25281037 is about 5028.0251590460. The cubic root of 25281037 is about 293.4933698284.

Adding to 25281037 its reverse (73018252), we get a palindrome (98299289).

The spelling of 25281037 in words is "twenty-five million, two hundred eighty-one thousand, thirty-seven".