25446416052 has 12 divisors (see below), whose sum is σ = 59374970816. Its totient is φ = 8482138680.

The previous prime is 25446416041. The next prime is 25446416069. The reversal of 25446416052 is 25061464452.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 25446416052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060267324 + ... + 1060267347.

Almost surely, 2^25446416052 is an apocalyptic number.

It is an amenable number.

25446416052 is an abundant number, since it is smaller than the sum of its proper divisors (33928554764).

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

25446416052 is a wasteful number, since it uses less digits than its factorization.

25446416052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120534678 (or 2120534676 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 25446416052 in words is "twenty-five billion, four hundred forty-six million, four hundred sixteen thousand, fifty-two".