25381477632 has 288 divisors, whose sum is σ = 82282217472. Its totient is φ = 6780321792.

The previous prime is 25381477543. The next prime is 25381477657. The reversal of 25381477632 is 23677418352.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15261633 + ... + 15263295.

It is an arithmetic number, because the mean of its divisors is an integer number (285702144).

Almost surely, 2^25381477632 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 25381477632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41141108736).

25381477632 is an abundant number, since it is smaller than the sum of its proper divisors (56900739840).

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

25381477632 is a wasteful number, since it uses less digits than its factorization.

25381477632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1859 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 25381477632 in words is "twenty-five billion, three hundred eighty-one million, four hundred seventy-seven thousand, six hundred thirty-two".