32505265021 has 4 divisors (see below), whose sum is σ = 34417339452. Its totient is φ = 30593190592.

The previous prime is 32505264989. The next prime is 32505265043. The reversal of 32505265021 is 12056250523.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20962985796 + 11542279225 = 144786^2 + 107435^2 .

It is a cyclic number.

It is not a de Polignac number, because 32505265021 - 2⁵ = 32505264989 is a prime.

It is a super-2 number, since 2×32505265021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32505269021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956037190 + ... + 956037223.

It is an arithmetic number, because the mean of its divisors is an integer number (8604334863).

Almost surely, 2^32505265021 is an apocalyptic number.

It is an amenable number.

32505265021 is a deficient number, since it is larger than the sum of its proper divisors (1912074431).

32505265021 is a wasteful number, since it uses less digits than its factorization.

32505265021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912074430.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 32505265021 in words is "thirty-two billion, five hundred five million, two hundred sixty-five thousand, twenty-one".