25570459 has 2 divisors, whose sum is σ = 25570460. Its totient is φ = 25570458.

The previous prime is 25570453. The next prime is 25570463. The reversal of 25570459 is 95407552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25570459 - 2⁵ = 25570427 is a prime.

It is not a weakly prime, because it can be changed into another prime (25570453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12785229 + 12785230.

It is an arithmetic number, because the mean of its divisors is an integer number (12785230).

Almost surely, 2^25570459 is an apocalyptic number.

25570459 is a deficient number, since it is larger than the sum of its proper divisors (1).

25570459 is an equidigital number, since it uses as much as digits as its factorization.

25570459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 25570459 is about 5056.7241372256. The cubic root of 25570459 is about 294.6091117010.

The spelling of 25570459 in words is "twenty-five million, five hundred seventy thousand, four hundred fifty-nine".