25736573 has 2 divisors, whose sum is σ = 25736574. Its totient is φ = 25736572.

The previous prime is 25736569. The next prime is 25736587. The reversal of 25736573 is 37563752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18992164 + 6744409 = 4358^2 + 2597^2 .

It is a cyclic number.

It is not a de Polignac number, because 25736573 - 2² = 25736569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25736533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12868286 + 12868287.

It is an arithmetic number, because the mean of its divisors is an integer number (12868287).

Almost surely, 2^25736573 is an apocalyptic number.

It is an amenable number.

25736573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25736573 is an equidigital number, since it uses as much as digits as its factorization.

25736573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 38.

The square root of 25736573 is about 5073.1226084139. The cubic root of 25736573 is about 295.2456940023.

The spelling of 25736573 in words is "twenty-five million, seven hundred thirty-six thousand, five hundred seventy-three".