25025437 has 2 divisors, whose sum is σ = 25025438. Its totient is φ = 25025436.

The previous prime is 25025417. The next prime is 25025443. The reversal of 25025437 is 73452052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22934521 + 2090916 = 4789^2 + 1446^2 .

It is a cyclic number.

It is not a de Polignac number, because 25025437 - 2¹¹ = 25023389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25025417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512718 + 12512719.

It is an arithmetic number, because the mean of its divisors is an integer number (12512719).

Almost surely, 2^25025437 is an apocalyptic number.

It is an amenable number.

25025437 is a deficient number, since it is larger than the sum of its proper divisors (1).

25025437 is an equidigital number, since it uses as much as digits as its factorization.

25025437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 25025437 is about 5002.5430532880. The cubic root of 25025437 is about 292.5009111911.

Adding to 25025437 its reverse (73452052), we get a palindrome (98477489).

The spelling of 25025437 in words is "twenty-five million, twenty-five thousand, four hundred thirty-seven".