25475617 has 2 divisors, whose sum is σ = 25475618. Its totient is φ = 25475616.

The previous prime is 25475587. The next prime is 25475621. The reversal of 25475617 is 71657452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22572001 + 2903616 = 4751^2 + 1704^2 .

It is a cyclic number.

It is not a de Polignac number, because 25475617 - 2¹⁵ = 25442849 is a prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12737808 + 12737809.

It is an arithmetic number, because the mean of its divisors is an integer number (12737809).

Almost surely, 2^25475617 is an apocalyptic number.

It is an amenable number.

25475617 is a deficient number, since it is larger than the sum of its proper divisors (1).

25475617 is an equidigital number, since it uses as much as digits as its factorization.

25475617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The square root of 25475617 is about 5047.3376150204. The cubic root of 25475617 is about 294.2444208946.

The spelling of 25475617 in words is "twenty-five million, four hundred seventy-five thousand, six hundred seventeen".