1428525 has 36 divisors (see below), whose sum is σ = 2927392. Its totient is φ = 652320.

The previous prime is 1428521. The next prime is 1428529. The reversal of 1428525 is 5258241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1428521) and next prime (1428529).

It is not a de Polignac number, because 1428525 - 2² = 1428521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428521) 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 35 ways as a sum of consecutive naturals, for example, 1122 + ... + 2028.

2^1428525 is an apocalyptic number.

1428525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1428525 is an abundant number, since it is smaller than the sum of its proper divisors (1498867).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428525 is a wasteful number, since it uses less digits than its factorization.

1428525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 922 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1428525 is about 1195.2091867117. The cubic root of 1428525 is about 112.6235679293.

It can be divided in two parts, 1428 and 525, that multiplied together give a triangular number (749700 = T₁₂₂₄).

The spelling of 1428525 in words is "one million, four hundred twenty-eight thousand, five hundred twenty-five".