1252025831 has 4 divisors (see below), whose sum is σ = 1430886672. Its totient is φ = 1073164992.

The previous prime is 1252025777. The next prime is 1252025833. The reversal of 1252025831 is 1385202521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252025831 is a prime.

It is a super-2 number, since 2×1252025831² = 3135137362982481122, 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 = 1252025794 and 1252025803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252025833) 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, 89430410 + ... + 89430423.

It is an arithmetic number, because the mean of its divisors is an integer number (357721668).

Almost surely, 2^1252025831 is an apocalyptic number.

1252025831 is a deficient number, since it is larger than the sum of its proper divisors (178860841).

1252025831 is an equidigital number, since it uses as much as digits as its factorization.

1252025831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178860840.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1252025831 is about 35383.9770376367. The cubic root of 1252025831 is about 1077.7989670019.

The spelling of 1252025831 in words is "one billion, two hundred fifty-two million, twenty-five thousand, eight hundred thirty-one".