2725167978 has 48 divisors (see below), whose sum is σ = 6379341696. Its totient is φ = 835794720.

The previous prime is 2725167971. The next prime is 2725167997. The reversal of 2725167978 is 8797615272.

It is a happy number.

2725167978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2725167971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54051 + ... + 91497.

It is an arithmetic number, because the mean of its divisors is an integer number (132902952).

Almost surely, 2^2725167978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2725167978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3189670848).

2725167978 is an abundant number, since it is smaller than the sum of its proper divisors (3654173718).

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

2725167978 is a wasteful number, since it uses less digits than its factorization.

2725167978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37779 (or 37776 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 2725167978 is about 52203.1414571958. The cubic root of 2725167978 is about 1396.7899203590.

The spelling of 2725167978 in words is "two billion, seven hundred twenty-five million, one hundred sixty-seven thousand, nine hundred seventy-eight".