1625897 has 16 divisors (see below), whose sum is σ = 2120832. Its totient is φ = 1209600.

The previous prime is 1625879. The next prime is 1625903. The reversal of 1625897 is 7985261.

It is not a de Polignac number, because 1625897 - 2¹⁸ = 1363753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1625897.

It is not an unprimeable number, because it can be changed into a prime (1625807) 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 15 ways as a sum of consecutive naturals, for example, 1022 + ... + 2072.

It is an arithmetic number, because the mean of its divisors is an integer number (132552).

2^1625897 is an apocalyptic number.

1625897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1625897 is a deficient number, since it is larger than the sum of its proper divisors (494935).

1625897 is a wasteful number, since it uses less digits than its factorization.

1625897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 30240, while the sum is 38.

The square root of 1625897 is about 1275.1066622052. The cubic root of 1625897 is about 117.5883626860.

The spelling of 1625897 in words is "one million, six hundred twenty-five thousand, eight hundred ninety-seven".