25700978 has 8 divisors (see below), whose sum is σ = 38589168. Its totient is φ = 12837924.

The previous prime is 25700933. The next prime is 25700981. The reversal of 25700978 is 87900752.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476 + ... + 7967.

It is an arithmetic number, because the mean of its divisors is an integer number (4823646).

Almost surely, 2^25700978 is an apocalyptic number.

25700978 is a deficient number, since it is larger than the sum of its proper divisors (12888190).

25700978 is a wasteful number, since it uses less digits than its factorization.

25700978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 25700978 is about 5069.6132002353. The cubic root of 25700978 is about 295.1095178927.

The spelling of 25700978 in words is "twenty-five million, seven hundred thousand, nine hundred seventy-eight".