1021231325 has 6 divisors (see below), whose sum is σ = 1266326874. Its totient is φ = 816985040.

The previous prime is 1021231319. The next prime is 1021231373. The reversal of 1021231325 is 5231321201.

It can be written as a sum of positive squares in 3 ways, for example, as 75238276 + 945993049 = 8674^2 + 30757^2 .

It is not a de Polignac number, because 1021231325 - 2⁸ = 1021231069 is a prime.

It is a super-2 number, since 2×1021231325² = 2085826838322511250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021231297 and 1021231306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20424602 + ... + 20424651.

It is an arithmetic number, because the mean of its divisors is an integer number (211054479).

Almost surely, 2^1021231325 is an apocalyptic number.

It is an amenable number.

1021231325 is a deficient number, since it is larger than the sum of its proper divisors (245095549).

1021231325 is an equidigital number, since it uses as much as digits as its factorization.

1021231325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40849263 (or 40849258 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1021231325 is about 31956.7101717308. The cubic root of 1021231325 is about 1007.0276054043.

Adding to 1021231325 its reverse (5231321201), we get a palindrome (6252552526).

The spelling of 1021231325 in words is "one billion, twenty-one million, two hundred thirty-one thousand, three hundred twenty-five".