1265073632 has 96 divisors (see below), whose sum is σ = 2725138080. Its totient is φ = 575815680.

The previous prime is 1265073629. The next prime is 1265073643. The reversal of 1265073632 is 2363705621.

It is a super-2 number, since 2×1265073632² = 3200822588763342848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1265073592 and 1265073601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2223044 + ... + 2223612.

It is an arithmetic number, because the mean of its divisors is an integer number (28386855).

Almost surely, 2^1265073632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265073632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362569040).

1265073632 is an abundant number, since it is smaller than the sum of its proper divisors (1460064448).

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

1265073632 is a wasteful number, since it uses less digits than its factorization.

1265073632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 1265073632 is about 35567.8735940174. The cubic root of 1265073632 is about 1081.5300763446.

The spelling of 1265073632 in words is "one billion, two hundred sixty-five million, seventy-three thousand, six hundred thirty-two".