25473220352 has 72 divisors (see below), whose sum is σ = 54257039760. Its totient is φ = 11900805120.

The previous prime is 25473220349. The next prime is 25473220363. The reversal of 25473220352 is 25302237452.

It is a super-3 number, since 3×25473220352³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319202 + ... + 390942.

Almost surely, 2^25473220352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25473220352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27128519880).

25473220352 is an abundant number, since it is smaller than the sum of its proper divisors (28783819408).

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

25473220352 is an equidigital number, since it uses as much as digits as its factorization.

25473220352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71849 (or 71835 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 35.

The spelling of 25473220352 in words is "twenty-five billion, four hundred seventy-three million, two hundred twenty thousand, three hundred fifty-two".