1525081 has 8 divisors (see below), whose sum is σ = 1615680. Its totient is φ = 1437072.

The previous prime is 1525067. The next prime is 1525093. The reversal of 1525081 is 1805251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1525081 - 2⁵ = 1525049 is a prime.

It is a super-2 number, since 2×1525081² = 4651744113122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525021) 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 7 ways as a sum of consecutive naturals, for example, 636 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (201960).

2^1525081 is an apocalyptic number.

It is an amenable number.

1525081 is a deficient number, since it is larger than the sum of its proper divisors (90599).

1525081 is a wasteful number, since it uses less digits than its factorization.

1525081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1525081 is about 1234.9416990287. The cubic root of 1525081 is about 115.1059137668.

The spelling of 1525081 in words is "one million, five hundred twenty-five thousand, eighty-one".