1025617 has 4 divisors (see below), whose sum is σ = 1028160. Its totient is φ = 1023076.

The previous prime is 1025611. The next prime is 1025621. The reversal of 1025617 is 7165201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7165201 = 41 ⋅174761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025617 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1025611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517 + ... + 1522.

It is an arithmetic number, because the mean of its divisors is an integer number (257040).

2^1025617 is an apocalyptic number.

It is an amenable number.

1025617 is a deficient number, since it is larger than the sum of its proper divisors (2543).

1025617 is an equidigital number, since it uses as much as digits as its factorization.

1025617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1025617 is about 1012.7275053044. The cubic root of 1025617 is about 100.8467105779.

The spelling of 1025617 in words is "one million, twenty-five thousand, six hundred seventeen".