1555025 has 6 divisors (see below), whose sum is σ = 1928262. Its totient is φ = 1244000.

The previous prime is 1555013. The next prime is 1555027. The reversal of 1555025 is 5205551.

It can be written as a sum of positive squares in 3 ways, for example, as 16 + 1555009 = 4^2 + 1247^2 .

It is not a de Polignac number, because 1555025 - 2²⁰ = 506449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1555027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31076 + ... + 31125.

It is an arithmetic number, because the mean of its divisors is an integer number (321377).

2^1555025 is an apocalyptic number.

It is an amenable number.

1555025 is a deficient number, since it is larger than the sum of its proper divisors (373237).

1555025 is an equidigital number, since it uses as much as digits as its factorization.

1555025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62211 (or 62206 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 1555025 is about 1247.0064153805. The cubic root of 1555025 is about 115.8543802941.

The spelling of 1555025 in words is "one million, five hundred fifty-five thousand, twenty-five".