1525005 has 12 divisors (see below), whose sum is σ = 2643420. Its totient is φ = 813312.

The previous prime is 1524989. The next prime is 1525021. The reversal of 1525005 is 5005251.

It is an interprime number because it is at equal distance from previous prime (1524989) and next prime (1525021).

It can be written as a sum of positive squares in 2 ways, for example, as 1077444 + 447561 = 1038^2 + 669^2 .

It is not a de Polignac number, because 1525005 - 2⁴ = 1524989 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16900 + ... + 16989.

It is an arithmetic number, because the mean of its divisors is an integer number (220285).

2^1525005 is an apocalyptic number.

1525005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1525005 is a deficient number, since it is larger than the sum of its proper divisors (1118415).

1525005 is a wasteful number, since it uses less digits than its factorization.

1525005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33900 (or 33897 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 1525005 is about 1234.9109279620. The cubic root of 1525005 is about 115.1040016946.

The spelling of 1525005 in words is "one million, five hundred twenty-five thousand, five".