25172573 has 2 divisors, whose sum is σ = 25172574. Its totient is φ = 25172572.

The previous prime is 25172561. The next prime is 25172599. The reversal of 25172573 is 37527152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23833924 + 1338649 = 4882^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 25172573 - 2⁸ = 25172317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25162573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12586286 + 12586287.

It is an arithmetic number, because the mean of its divisors is an integer number (12586287).

Almost surely, 2^25172573 is an apocalyptic number.

It is an amenable number.

25172573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25172573 is an equidigital number, since it uses as much as digits as its factorization.

25172573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14700, while the sum is 32.

The square root of 25172573 is about 5017.2276209078. The cubic root of 25172573 is about 293.0730403004.

The spelling of 25172573 in words is "twenty-five million, one hundred seventy-two thousand, five hundred seventy-three".