25650137 has 2 divisors, whose sum is σ = 25650138. Its totient is φ = 25650136.

The previous prime is 25650101. The next prime is 25650151. The reversal of 25650137 is 73105652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 4682896 = 4579^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 25650137 - 2⁸ = 25649881 is a prime.

It is not a weakly prime, because it can be changed into another prime (25650167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825068 + 12825069.

It is an arithmetic number, because the mean of its divisors is an integer number (12825069).

Almost surely, 2^25650137 is an apocalyptic number.

It is an amenable number.

25650137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25650137 is an equidigital number, since it uses as much as digits as its factorization.

25650137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 25650137 is about 5064.5964301216. The cubic root of 25650137 is about 294.9147968051.

Adding to 25650137 its reverse (73105652), we get a palindrome (98755789).

The spelling of 25650137 in words is "twenty-five million, six hundred fifty thousand, one hundred thirty-seven".