68225531 has 16 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 60857280.

The previous prime is 68225467. The next prime is 68225537. The reversal of 68225531 is 13552286.

It is not a de Polignac number, because 68225531 - 2⁶ = 68225467 is a prime.

It is a super-2 number, since 2×68225531² = 9309446160463922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68225537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222080 + ... + 222386.

It is an arithmetic number, because the mean of its divisors is an integer number (4740120).

Almost surely, 2^68225531 is an apocalyptic number.

68225531 is a deficient number, since it is larger than the sum of its proper divisors (7616389).

68225531 is a wasteful number, since it uses less digits than its factorization.

68225531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its digits is 14400, while the sum is 32.

The square root of 68225531 is about 8259.8747569197. The cubic root of 68225531 is about 408.6162572165.

It can be divided in two parts, 682255 and 31, that added together give a palindrome (682286).

The spelling of 68225531 in words is "sixty-eight million, two hundred twenty-five thousand, five hundred thirty-one".