25213697 has 2 divisors, whose sum is σ = 25213698. Its totient is φ = 25213696.

The previous prime is 25213651. The next prime is 25213711. The reversal of 25213697 is 79631252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24611521 + 602176 = 4961^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 25213697 - 2²⁰ = 24165121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25213607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606848 + 12606849.

It is an arithmetic number, because the mean of its divisors is an integer number (12606849).

Almost surely, 2^25213697 is an apocalyptic number.

It is an amenable number.

25213697 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213697 is an equidigital number, since it uses as much as digits as its factorization.

25213697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 25213697 is about 5021.3242277312. The cubic root of 25213697 is about 293.2325495995.

The spelling of 25213697 in words is "twenty-five million, two hundred thirteen thousand, six hundred ninety-seven".