25955597 has 2 divisors, whose sum is σ = 25955598. Its totient is φ = 25955596.

The previous prime is 25955593. The next prime is 25955621. The reversal of 25955597 is 79555952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20484676 + 5470921 = 4526^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 25955597 - 2² = 25955593 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 (25955593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12977798 + 12977799.

It is an arithmetic number, because the mean of its divisors is an integer number (12977799).

Almost surely, 2^25955597 is an apocalyptic number.

It is an amenable number.

25955597 is a deficient number, since it is larger than the sum of its proper divisors (1).

25955597 is an equidigital number, since it uses as much as digits as its factorization.

25955597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708750, while the sum is 47.

The square root of 25955597 is about 5094.6635806499. The cubic root of 25955597 is about 296.0808649589.

It can be divided in two parts, 2595 and 5597, that added together give a 13-th power (8192 = 2¹³).

The spelling of 25955597 in words is "twenty-five million, nine hundred fifty-five thousand, five hundred ninety-seven".