1525605 has 32 divisors (see below), whose sum is σ = 2643840. Its totient is φ = 748800.

The previous prime is 1525571. The next prime is 1525607. The reversal of 1525605 is 5065251.

It is not a de Polignac number, because 1525605 - 2⁷ = 1525477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15055 + ... + 15155.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2^1525605 is an apocalyptic number.

1525605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1525605 is a deficient number, since it is larger than the sum of its proper divisors (1118235).

1525605 is a wasteful number, since it uses less digits than its factorization.

1525605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1525605 is about 1235.1538365726. The cubic root of 1525605 is about 115.1190952726.

The spelling of 1525605 in words is "one million, five hundred twenty-five thousand, six hundred five".