1265172364 has 6 divisors (see below), whose sum is σ = 2214051644. Its totient is φ = 632586180.

The previous prime is 1265172353. The next prime is 1265172371. The reversal of 1265172364 is 4632715621.

It is a super-2 number, since 2×1265172364² = 3201322221258696992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158146542 + ... + 158146549.

Almost surely, 2^1265172364 is an apocalyptic number.

It is an amenable number.

1265172364 is a deficient number, since it is larger than the sum of its proper divisors (948879280).

1265172364 is a wasteful number, since it uses less digits than its factorization.

1265172364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316293095 (or 316293093 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 1265172364 is about 35569.2615048443. The cubic root of 1265172364 is about 1081.5582114262.

Adding to 1265172364 its reverse (4632715621), we get a palindrome (5897887985).

It can be divided in two parts, 126517 and 2364, that added together give a square (128881 = 359²).

The spelling of 1265172364 in words is "one billion, two hundred sixty-five million, one hundred seventy-two thousand, three hundred sixty-four".