1525230 has 80 divisors (see below), whose sum is σ = 4704480. Its totient is φ = 347328.

The previous prime is 1525229. The next prime is 1525243. The reversal of 1525230 is 325251.

1525230 = 616² + 617² + ... + 619².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5536 + ... + 5804.

It is an arithmetic number, because the mean of its divisors is an integer number (58806).

2^1525230 is an apocalyptic number.

1525230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352240).

1525230 is an abundant number, since it is smaller than the sum of its proper divisors (3179250).

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

1525230 is a wasteful number, since it uses less digits than its factorization.

1525230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1525230 is about 1235.0020242898. The cubic root of 1525230 is about 115.1096622502.

The spelling of 1525230 in words is "one million, five hundred twenty-five thousand, two hundred thirty".