891625 has 16 divisors (see below), whose sum is σ = 1272960. Its totient is φ = 610800.

The previous prime is 891617. The next prime is 891629. The reversal of 891625 is 526198.

It is not a de Polignac number, because 891625 - 2³ = 891617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (891629) 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, 366 + ... + 1384.

It is an arithmetic number, because the mean of its divisors is an integer number (79560).

2⁸⁹¹⁶²⁵ is an apocalyptic number.

It is an amenable number.

891625 is a deficient number, since it is larger than the sum of its proper divisors (381335).

891625 is a wasteful number, since it uses less digits than its factorization.

891625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1031 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 891625 is about 944.2589687157. The cubic root of 891625 is about 96.2485241804.

The spelling of 891625 in words is "eight hundred ninety-one thousand, six hundred twenty-five".