25384537 has 2 divisors, whose sum is σ = 25384538. Its totient is φ = 25384536.

The previous prime is 25384529. The next prime is 25384543. The reversal of 25384537 is 73548352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23970816 + 1413721 = 4896^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 25384537 - 2³ = 25384529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25384496 and 25384505.

It is not a weakly prime, because it can be changed into another prime (25384507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692268 + 12692269.

It is an arithmetic number, because the mean of its divisors is an integer number (12692269).

Almost surely, 2^25384537 is an apocalyptic number.

It is an amenable number.

25384537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25384537 is an equidigital number, since it uses as much as digits as its factorization.

25384537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 37.

The square root of 25384537 is about 5038.3069576992. The cubic root of 25384537 is about 293.8933429274.

It can be divided in two parts, 25384 and 537, that added together give a square (25921 = 161²).

The spelling of 25384537 in words is "twenty-five million, three hundred eighty-four thousand, five hundred thirty-seven".