25582457 has 2 divisors, whose sum is σ = 25582458. Its totient is φ = 25582456.

The previous prime is 25582441. The next prime is 25582477. The reversal of 25582457 is 75428552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25563136 + 19321 = 5056^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 25582457 - 2⁴ = 25582441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25582457.

It is not a weakly prime, because it can be changed into another prime (25582477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12791228 + 12791229.

It is an arithmetic number, because the mean of its divisors is an integer number (12791229).

Almost surely, 2^25582457 is an apocalyptic number.

It is an amenable number.

25582457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25582457 is an equidigital number, since it uses as much as digits as its factorization.

25582457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112000, while the sum is 38.

The square root of 25582457 is about 5057.9103392607. The cubic root of 25582457 is about 294.6551826693.

The spelling of 25582457 in words is "twenty-five million, five hundred eighty-two thousand, four hundred fifty-seven".