25105537 has 2 divisors, whose sum is σ = 25105538. Its totient is φ = 25105536.

The previous prime is 25105523. The next prime is 25105547. The reversal of 25105537 is 73550152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16248961 + 8856576 = 4031^2 + 2976^2 .

It is a cyclic number.

It is not a de Polignac number, because 25105537 - 2¹¹ = 25103489 is a prime.

It is not a weakly prime, because it can be changed into another prime (25105547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552768 + 12552769.

It is an arithmetic number, because the mean of its divisors is an integer number (12552769).

Almost surely, 2^25105537 is an apocalyptic number.

It is an amenable number.

25105537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25105537 is an equidigital number, since it uses as much as digits as its factorization.

25105537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 25105537 is about 5010.5425853893. The cubic root of 25105537 is about 292.8126522709.

Adding to 25105537 its reverse (73550152), we get a palindrome (98655689).

The spelling of 25105537 in words is "twenty-five million, one hundred five thousand, five hundred thirty-seven".