1525641 has 8 divisors (see below), whose sum is σ = 2190720. Its totient is φ = 938832.

The previous prime is 1525639. The next prime is 1525669. The reversal of 1525641 is 1465251.

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

It is not a de Polignac number, because 1525641 - 2¹ = 1525639 is a prime.

1525641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1524641) 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, 19521 + ... + 19598.

It is an arithmetic number, because the mean of its divisors is an integer number (273840).

2^1525641 is an apocalyptic number.

It is an amenable number.

1525641 is a deficient number, since it is larger than the sum of its proper divisors (665079).

1525641 is a wasteful number, since it uses less digits than its factorization.

1525641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39135.

The product of its digits is 1200, while the sum is 24.

The square root of 1525641 is about 1235.1684095701. The cubic root of 1525641 is about 115.1200007614.

The spelling of 1525641 in words is "one million, five hundred twenty-five thousand, six hundred forty-one".