1231025 has 12 divisors (see below), whose sum is σ = 1565004. Its totient is φ = 960000.

The previous prime is 1231003. The next prime is 1231039. The reversal of 1231025 is 5201321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 628849 + 602176 = 793^2 + 776^2 .

It is not a de Polignac number, because 1231025 - 2⁸ = 1230769 is a prime.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (130417).

2^1231025 is an apocalyptic number.

It is an amenable number.

1231025 is a deficient number, since it is larger than the sum of its proper divisors (333979).

1231025 is a wasteful number, since it uses less digits than its factorization.

1231025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1231025 is about 1109.5156600968. The cubic root of 1231025 is about 107.1738809631.

Adding to 1231025 its reverse (5201321), we get a palindrome (6432346).

The spelling of 1231025 in words is "one million, two hundred thirty-one thousand, twenty-five".