1025566231 has 4 divisors (see below), whose sum is σ = 1025790832. Its totient is φ = 1025341632.

The previous prime is 1025566207. The next prime is 1025566277. The reversal of 1025566231 is 1326655201.

1025566231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025566231 - 2¹⁵ = 1025533463 is a prime.

It is a super-2 number, since 2×1025566231² = 2103572188335090722, 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 = 1025566193 and 1025566202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025566291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105306 + ... + 114631.

It is an arithmetic number, because the mean of its divisors is an integer number (256447708).

Almost surely, 2^1025566231 is an apocalyptic number.

1025566231 is a deficient number, since it is larger than the sum of its proper divisors (224601).

1025566231 is an equidigital number, since it uses as much as digits as its factorization.

1025566231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224600.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1025566231 is about 32024.4630087688. The cubic root of 1025566231 is about 1008.4504654828.

The spelling of 1025566231 in words is "one billion, twenty-five million, five hundred sixty-six thousand, two hundred thirty-one".