1265510052 has 54 divisors (see below), whose sum is σ = 3228660162. Its totient is φ = 417951744.

The previous prime is 1265510017. The next prime is 1265510063. The reversal of 1265510052 is 2500155621.

1265510052 is a `hidden beast` number, since 1 + 2 + 655 + 1 + 0 + 0 + 5 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 576 + 1265509476 = 24^2 + 35574^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1265509998 and 1265510025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 458308 + ... + 461060.

It is an arithmetic number, because the mean of its divisors is an integer number (59790003).

Almost surely, 2^1265510052 is an apocalyptic number.

1265510052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265510052 is an abundant number, since it is smaller than the sum of its proper divisors (1963150110).

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

1265510052 is a wasteful number, since it uses less digits than its factorization.

1265510052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1265510052 is about 35574.0080957994. The cubic root of 1265510052 is about 1081.6544293409.

Adding to 1265510052 its reverse (2500155621), we get a palindrome (3765665673).

The spelling of 1265510052 in words is "one billion, two hundred sixty-five million, five hundred ten thousand, fifty-two".