1525625 has 10 divisors (see below), whose sum is σ = 1907202. Its totient is φ = 1220000.

The previous prime is 1525609. The next prime is 1525633. The reversal of 1525625 is 5265251.

It can be written as a sum of positive squares in 5 ways, for example, as 952576 + 573049 = 976^2 + 757^2 .

It is not a de Polignac number, because 1525625 - 2⁴ = 1525609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1525594 and 1525603.

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 9 ways as a sum of consecutive naturals, for example, 596 + ... + 1845.

2^1525625 is an apocalyptic number.

It is an amenable number.

1525625 is a deficient number, since it is larger than the sum of its proper divisors (381577).

1525625 is an frugal number, since it uses more digits than its factorization.

1525625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2446 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 1525625 is about 1235.1619327036. The cubic root of 1525625 is about 115.1195983237.

The spelling of 1525625 in words is "one million, five hundred twenty-five thousand, six hundred twenty-five".