1265240022 has 16 divisors (see below), whose sum is σ = 2566121472. Its totient is φ = 415806440.

The previous prime is 1265240003. The next prime is 1265240059. The reversal of 1265240022 is 2200425621.

It is a happy number.

It is a super-3 number, since 3×1265240022³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1265239974 and 1265240001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484598 + ... + 1485449.

It is an arithmetic number, because the mean of its divisors is an integer number (160382592).

Almost surely, 2^1265240022 is an apocalyptic number.

1265240022 is an abundant number, since it is smaller than the sum of its proper divisors (1300881450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265240022 is a wasteful number, since it uses less digits than its factorization.

1265240022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970123.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1265240022 is about 35570.2125661346. The cubic root of 1265240022 is about 1081.5774906863.

Adding to 1265240022 its reverse (2200425621), we get a palindrome (3465665643).

The spelling of 1265240022 in words is "one billion, two hundred sixty-five million, two hundred forty thousand, twenty-two".