1025571 has 8 divisors (see below), whose sum is σ = 1381120. Its totient is φ = 676872.

The previous prime is 1025561. The next prime is 1025579. The reversal of 1025571 is 1755201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025571 - 2⁷ = 1025443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025579) 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 7 ways as a sum of consecutive naturals, for example, 1351 + ... + 1968.

It is an arithmetic number, because the mean of its divisors is an integer number (172640).

2^1025571 is an apocalyptic number.

1025571 is a deficient number, since it is larger than the sum of its proper divisors (355549).

1025571 is a wasteful number, since it uses less digits than its factorization.

1025571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1025571 is about 1012.7047941034. The cubic root of 1025571 is about 100.8452028617.

It can be divided in two parts, 1025 and 571, that added together give a triangular number (1596 = T₅₆).

The spelling of 1025571 in words is "one million, twenty-five thousand, five hundred seventy-one".