25429478028 has 24 divisors (see below), whose sum is σ = 60597906432. Its totient is φ = 8296141584.

The previous prime is 25429478027. The next prime is 25429478071. The reversal of 25429478028 is 82087492452.

It is not an unprimeable number, because it can be changed into a prime (25429478027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22543300 + ... + 22544427.

It is an arithmetic number, because the mean of its divisors is an integer number (2524912768).

Almost surely, 2^25429478028 is an apocalyptic number.

It is an amenable number.

25429478028 is an abundant number, since it is smaller than the sum of its proper divisors (35168428404).

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

25429478028 is a wasteful number, since it uses less digits than its factorization.

25429478028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45087781 (or 45087779 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 25429478028 in words is "twenty-five billion, four hundred twenty-nine million, four hundred seventy-eight thousand, twenty-eight".