1025569 has 4 divisors (see below), whose sum is σ = 1040944. Its totient is φ = 1010196.

The previous prime is 1025561. The next prime is 1025579. The reversal of 1025569 is 9655201.

1025569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 1025569 - 2³ = 1025561 is a prime.

It is a super-2 number, since 2×1025569² = 2103583547522, which contains 22 as substring.

It is a Duffinian number.

1025569 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1025561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7587 + ... + 7720.

It is an arithmetic number, because the mean of its divisors is an integer number (260236).

2^1025569 is an apocalyptic number.

It is an amenable number.

1025569 is a deficient number, since it is larger than the sum of its proper divisors (15375).

1025569 is an equidigital number, since it uses as much as digits as its factorization.

1025569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15374.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1025569 is about 1012.7038066483. The cubic root of 1025569 is about 100.8451373078.

It can be divided in two parts, 102 and 5569, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 1025569 in words is "one million, twenty-five thousand, five hundred sixty-nine".