265131507212 has 192 divisors, whose sum is σ = 562425292800. Its totient is φ = 107784069120.

The previous prime is 265131507203. The next prime is 265131507227. The reversal of 265131507212 is 212705131562.

It is a super-2 number, since 2×265131507212² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 699555239 + ... + 699555617.

It is an arithmetic number, because the mean of its divisors is an integer number (2929298400).

Almost surely, 2^265131507212 is an apocalyptic number.

265131507212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

265131507212 is an abundant number, since it is smaller than the sum of its proper divisors (297293785588).

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

265131507212 is a wasteful number, since it uses less digits than its factorization.

265131507212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 265131507212 its reverse (212705131562), we get a palindrome (477836638774).

The spelling of 265131507212 in words is "two hundred sixty-five billion, one hundred thirty-one million, five hundred seven thousand, two hundred twelve".