1456825813 has 2 divisors, whose sum is σ = 1456825814. Its totient is φ = 1456825812.

The previous prime is 1456825801. The next prime is 1456825847. The reversal of 1456825813 is 3185286541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774675889 + 682149924 = 27833^2 + 26118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1456825813 is a prime.

It is a super-2 number, since 2×1456825813² = 4244682898846221938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1456825813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1456822813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728412906 + 728412907.

It is an arithmetic number, because the mean of its divisors is an integer number (728412907).

Almost surely, 2^1456825813 is an apocalyptic number.

It is an amenable number.

1456825813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456825813 is an equidigital number, since it uses as much as digits as its factorization.

1456825813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 43.

The square root of 1456825813 is about 38168.3876133116. The cubic root of 1456825813 is about 1133.6244633763.

The spelling of 1456825813 in words is "one billion, four hundred fifty-six million, eight hundred twenty-five thousand, eight hundred thirteen".