1265016252 has 24 divisors (see below), whose sum is σ = 2953641600. Its totient is φ = 421395376.

The previous prime is 1265016229. The next prime is 1265016253. The reversal of 1265016252 is 2526105621.

It is a super-2 number, since 2×1265016252² = 3200532235648255008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265016253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15102 + ... + 52517.

It is an arithmetic number, because the mean of its divisors is an integer number (123068400).

Almost surely, 2^1265016252 is an apocalyptic number.

1265016252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265016252 is an abundant number, since it is smaller than the sum of its proper divisors (1688625348).

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

1265016252 is a wasteful number, since it uses less digits than its factorization.

1265016252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69185 (or 69183 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1265016252 is about 35567.0669580723. The cubic root of 1265016252 is about 1081.5137244284.

The spelling of 1265016252 in words is "one billion, two hundred sixty-five million, sixteen thousand, two hundred fifty-two".