1265320032 has 48 divisors (see below), whose sum is σ = 3323400192. Its totient is φ = 421527680.

The previous prime is 1265320003. The next prime is 1265320037. The reversal of 1265320032 is 2300235621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1265319984 and 1265320011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265320037) 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, 246193 + ... + 251279.

It is an arithmetic number, because the mean of its divisors is an integer number (69237504).

Almost surely, 2^1265320032 is an apocalyptic number.

1265320032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265320032 is an abundant number, since it is smaller than the sum of its proper divisors (2058080160).

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

1265320032 is a wasteful number, since it uses less digits than its factorization.

1265320032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7691 (or 7683 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1265320032 is about 35571.3372253560. The cubic root of 1265320032 is about 1081.6002887824.

Adding to 1265320032 its reverse (2300235621), we get a palindrome (3565555653).

The spelling of 1265320032 in words is "one billion, two hundred sixty-five million, three hundred twenty thousand, thirty-two".