1025871 has 16 divisors (see below), whose sum is σ = 1705728. Its totient is φ = 532800.

The previous prime is 1025839. The next prime is 1025873. The reversal of 1025871 is 1785201.

It is not a de Polignac number, because 1025871 - 2⁵ = 1025839 is a prime.

It is a super-2 number, since 2×1025871² = 2104822617282, which contains 22 as substring.

1025871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1990 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (106608).

2^1025871 is an apocalyptic number.

1025871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1025871 is a deficient number, since it is larger than the sum of its proper divisors (679857).

1025871 is a wasteful number, since it uses less digits than its factorization.

1025871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1025871 is about 1012.8529014620. The cubic root of 1025871 is about 100.8550349817.

The spelling of 1025871 in words is "one million, twenty-five thousand, eight hundred seventy-one".