1226325639 has 64 divisors (see below), whose sum is σ = 2144148480. Its totient is φ = 604800000.

The previous prime is 1226325619. The next prime is 1226325689. The reversal of 1226325639 is 9365236221.

It is not a de Polignac number, because 1226325639 - 2⁸ = 1226325383 is a prime.

It is a super-3 number, since 3×1226325639³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1226325597 and 1226325606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226325619) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 407139 + ... + 410139.

It is an arithmetic number, because the mean of its divisors is an integer number (33502320).

Almost surely, 2^1226325639 is an apocalyptic number.

1226325639 is a deficient number, since it is larger than the sum of its proper divisors (917822841).

1226325639 is a wasteful number, since it uses less digits than its factorization.

1226325639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112.

The product of its digits is 116640, while the sum is 39.

The square root of 1226325639 is about 35018.9325793920. The cubic root of 1226325639 is about 1070.3733052705.

It can be divided in two parts, 122632 and 5639, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 1226325639 in words is "one billion, two hundred twenty-six million, three hundred twenty-five thousand, six hundred thirty-nine".