811025953 has 4 divisors (see below), whose sum is σ = 858733380. Its totient is φ = 763318528.

The previous prime is 811025947. The next prime is 811025959. The reversal of 811025953 is 359520118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359520118 = 2 ⋅179760059.

It is an interprime number because it is at equal distance from previous prime (811025947) and next prime (811025959).

It can be written as a sum of positive squares in 2 ways, for example, as 717864849 + 93161104 = 26793^2 + 9652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811025953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811025959) 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, 23853688 + ... + 23853721.

It is an arithmetic number, because the mean of its divisors is an integer number (214683345).

Almost surely, 2^811025953 is an apocalyptic number.

It is an amenable number.

811025953 is a deficient number, since it is larger than the sum of its proper divisors (47707427).

811025953 is a wasteful number, since it uses less digits than its factorization.

811025953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47707426.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 811025953 is about 28478.5173946960. The cubic root of 811025953 is about 932.5631504933.

The spelling of 811025953 in words is "eight hundred eleven million, twenty-five thousand, nine hundred fifty-three".