25464221232 has 40 divisors (see below), whose sum is σ = 66397375296. Its totient is φ = 8408744256.

The previous prime is 25464221231. The next prime is 25464221257. The reversal of 25464221232 is 23212246452.

It is a junction number, because it is equal to n+sod(n) for n = 25464221193 and 25464221202.

It is not an unprimeable number, because it can be changed into a prime (25464221231) 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, 2473858 + ... + 2484129.

Almost surely, 2^25464221232 is an apocalyptic number.

It is an amenable number.

25464221232 is an abundant number, since it is smaller than the sum of its proper divisors (40933154064).

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

25464221232 is a wasteful number, since it uses less digits than its factorization.

25464221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958105 (or 4958099 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

Adding to 25464221232 its reverse (23212246452), we get a palindrome (48676467684).

The spelling of 25464221232 in words is "twenty-five billion, four hundred sixty-four million, two hundred twenty-one thousand, two hundred thirty-two".