325221215042 has 4 divisors (see below), whose sum is σ = 487831822566. Its totient is φ = 162610607520.

The previous prime is 325221215041. The next prime is 325221215089. The reversal of 325221215042 is 240512122523.

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 only one way, i.e., 278466234601 + 46754980441 = 527699^2 + 216229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 325221214996 and 325221215014.

It is not an unprimeable number, because it can be changed into a prime (325221215041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81305303759 + ... + 81305303762.

Almost surely, 2^325221215042 is an apocalyptic number.

325221215042 is a deficient number, since it is larger than the sum of its proper divisors (162610607524).

325221215042 is a wasteful number, since it uses less digits than its factorization.

325221215042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162610607523.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 325221215042 its reverse (240512122523), we get a palindrome (565733337565).

The spelling of 325221215042 in words is "three hundred twenty-five billion, two hundred twenty-one million, two hundred fifteen thousand, forty-two".