25535597 has 2 divisors, whose sum is σ = 25535598. Its totient is φ = 25535596.

The previous prime is 25535557. The next prime is 25535611. The reversal of 25535597 is 79553552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22335076 + 3200521 = 4726^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 25535597 - 2⁶ = 25535533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25535557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12767798 + 12767799.

It is an arithmetic number, because the mean of its divisors is an integer number (12767799).

Almost surely, 2^25535597 is an apocalyptic number.

It is an amenable number.

25535597 is a deficient number, since it is larger than the sum of its proper divisors (1).

25535597 is an equidigital number, since it uses as much as digits as its factorization.

25535597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236250, while the sum is 41.

The square root of 25535597 is about 5053.2758681869. The cubic root of 25535597 is about 294.4751637214.

The spelling of 25535597 in words is "twenty-five million, five hundred thirty-five thousand, five hundred ninety-seven".