25616953 has 2 divisors, whose sum is σ = 25616954. Its totient is φ = 25616952.

The previous prime is 25616951. The next prime is 25616957. The reversal of 25616953 is 35961652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25522704 + 94249 = 5052^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 25616953 - 2¹ = 25616951 is a prime.

Together with 25616951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25616951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808476 + 12808477.

It is an arithmetic number, because the mean of its divisors is an integer number (12808477).

Almost surely, 2^25616953 is an apocalyptic number.

It is an amenable number.

25616953 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616953 is an equidigital number, since it uses as much as digits as its factorization.

25616953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 25616953 is about 5061.3192944133. The cubic root of 25616953 is about 294.7875632293.

It can be divided in two parts, 25616 and 953, that added together give a square (26569 = 163²).

The spelling of 25616953 in words is "twenty-five million, six hundred sixteen thousand, nine hundred fifty-three".