1081625 has 16 divisors (see below), whose sum is σ = 1432080. Its totient is φ = 812800.

The previous prime is 1081583. The next prime is 1081631. The reversal of 1081625 is 5261801.

It can be written as a sum of positive squares in 8 ways, for example, as 87616 + 994009 = 296^2 + 997^2 .

It is not a de Polignac number, because 1081625 - 2⁸ = 1081369 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081625.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (89505).

2^1081625 is an apocalyptic number.

It is an amenable number.

1081625 is a deficient number, since it is larger than the sum of its proper divisors (350455).

1081625 is an equidigital number, since it uses as much as digits as its factorization.

1081625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1081625 is about 1040.0120191613. The cubic root of 1081625 is about 102.6499886234.

It can be divided in two parts, 10816 and 25, that multiplied together give a square (270400 = 520²).

The spelling of 1081625 in words is "one million, eighty-one thousand, six hundred twenty-five".