1531025 has 12 divisors (see below), whose sum is σ = 1940352. Its totient is φ = 1197840.

The previous prime is 1531021. The next prime is 1531027. The reversal of 1531025 is 5201351.

It is not a de Polignac number, because 1531025 - 2² = 1531021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1530994 and 1531012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531021) 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 11 ways as a sum of consecutive naturals, for example, 524 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (161696).

2^1531025 is an apocalyptic number.

It is an amenable number.

1531025 is a deficient number, since it is larger than the sum of its proper divisors (409327).

1531025 is a wasteful number, since it uses less digits than its factorization.

1531025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1531025 is about 1237.3459500075. The cubic root of 1531025 is about 115.2552615927.

Adding to 1531025 its reverse (5201351), we get a palindrome (6732376).

The spelling of 1531025 in words is "one million, five hundred thirty-one thousand, twenty-five".