1625255 has 4 divisors (see below), whose sum is σ = 1950312. Its totient is φ = 1300200.

The previous prime is 1625227. The next prime is 1625257. The reversal of 1625255 is 5525261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5525261 = 7 ⋅789323.

It is a de Polignac number, because none of the positive numbers 2^k-1625255 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 (1625257) 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 3 ways as a sum of consecutive naturals, for example, 162521 + ... + 162530.

It is an arithmetic number, because the mean of its divisors is an integer number (487578).

2^1625255 is an apocalyptic number.

1625255 is a deficient number, since it is larger than the sum of its proper divisors (325057).

1625255 is an equidigital number, since it uses as much as digits as its factorization.

1625255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325056.

The product of its digits is 3000, while the sum is 26.

The square root of 1625255 is about 1274.8548937036. The cubic root of 1625255 is about 117.5728837090.

The spelling of 1625255 in words is "one million, six hundred twenty-five thousand, two hundred fifty-five".