25478545932 has 144 divisors (see below), whose sum is σ = 79747379712. Its totient is φ = 6691991040.

The previous prime is 25478545903. The next prime is 25478545951. The reversal of 25478545932 is 23954587452.

25478545932 is a `hidden beast` number, since 2 + 5 + 4 + 7 + 8 + 545 + 93 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115057 + ... + 253367.

It is an arithmetic number, because the mean of its divisors is an integer number (553801248).

Almost surely, 2^25478545932 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 25478545932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39873689856).

25478545932 is an abundant number, since it is smaller than the sum of its proper divisors (54268833780).

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

25478545932 is a wasteful number, since it uses less digits than its factorization.

25478545932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138388 (or 138383 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 25478545932 in words is "twenty-five billion, four hundred seventy-eight million, five hundred forty-five thousand, nine hundred thirty-two".