800025631 has 2 divisors, whose sum is σ = 800025632. Its totient is φ = 800025630.

The previous prime is 800025607. The next prime is 800025683. The reversal of 800025631 is 136520008.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800025631 - 2⁹ = 800025119 is a prime.

It is a super-2 number, since 2×800025631² = 1280082020513896322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 800025596 and 800025605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800025601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400012815 + 400012816.

It is an arithmetic number, because the mean of its divisors is an integer number (400012816).

Almost surely, 2^800025631 is an apocalyptic number.

800025631 is a deficient number, since it is larger than the sum of its proper divisors (1).

800025631 is an equidigital number, since it uses as much as digits as its factorization.

800025631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 800025631 is about 28284.7243401805. The cubic root of 800025631 is about 928.3276806636.

Adding to 800025631 its reverse (136520008), we get a palindrome (936545639).

The spelling of 800025631 in words is "eight hundred million, twenty-five thousand, six hundred thirty-one".