1525255 has 16 divisors (see below), whose sum is σ = 1933920. Its totient is φ = 1153152.

The previous prime is 1525243. The next prime is 1525261. The reversal of 1525255 is 5525251.

1525255 = T₁₇₉ + T₁₈₀ + ... + T₂₄₅.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1525255 is a prime.

It is a congruent number.

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, 9637 + ... + 9793.

It is an arithmetic number, because the mean of its divisors is an integer number (120870).

2^1525255 is an apocalyptic number.

1525255 is a deficient number, since it is larger than the sum of its proper divisors (408665).

1525255 is a wasteful number, since it uses less digits than its factorization.

1525255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its digits is 2500, while the sum is 25.

The square root of 1525255 is about 1235.0121456893. The cubic root of 1525255 is about 115.1102911665.

The spelling of 1525255 in words is "one million, five hundred twenty-five thousand, two hundred fifty-five".