25056978 has 8 divisors (see below), whose sum is σ = 50113968. Its totient is φ = 8352324.

The previous prime is 25056947. The next prime is 25056979. The reversal of 25056978 is 87965052.

It is a sphenic number, since it is the product of 3 distinct primes.

25056978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25056979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088076 + ... + 2088087.

It is an arithmetic number, because the mean of its divisors is an integer number (6264246).

Almost surely, 2^25056978 is an apocalyptic number.

25056978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25056978 is a wasteful number, since it uses less digits than its factorization.

25056978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176168.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 25056978 is about 5005.6945572018. The cubic root of 25056978 is about 292.6237448506.

The spelling of 25056978 in words is "twenty-five million, fifty-six thousand, nine hundred seventy-eight".