1020525 has 24 divisors (see below), whose sum is σ = 1842144. Its totient is φ = 494400.

The previous prime is 1020517. The next prime is 1020529. The reversal of 1020525 is 5250201.

It is not a de Polignac number, because 1020525 - 2³ = 1020517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (76756).

2^1020525 is an apocalyptic number.

1020525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020525 is the 825-th pentagonal number.

It is an amenable number.

1020525 is a deficient number, since it is larger than the sum of its proper divisors (821619).

1020525 is a wasteful number, since it uses less digits than its factorization.

1020525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1020525 is about 1010.2103741301. The cubic root of 1020525 is about 100.6795384814.

Adding to 1020525 its reverse (5250201), we get a palindrome (6270726).

The spelling of 1020525 in words is "one million, twenty thousand, five hundred twenty-five".