25467644616 has 16 divisors (see below), whose sum is σ = 63669111600. Its totient is φ = 8489214864.

The previous prime is 25467644611. The next prime is 25467644617. The reversal of 25467644616 is 61644676452.

It is not an unprimeable number, because it can be changed into a prime (25467644611) 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, 530575906 + ... + 530575953.

It is an arithmetic number, because the mean of its divisors is an integer number (3979319475).

Almost surely, 2^25467644616 is an apocalyptic number.

It is an amenable number.

25467644616 is an abundant number, since it is smaller than the sum of its proper divisors (38201466984).

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

25467644616 is a wasteful number, since it uses less digits than its factorization.

25467644616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061151868 (or 1061151864 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The spelling of 25467644616 in words is "twenty-five billion, four hundred sixty-seven million, six hundred forty-four thousand, six hundred sixteen".