25274978 has 8 divisors (see below), whose sum is σ = 39907920. Its totient is φ = 11972340.

The previous prime is 25274941. The next prime is 25274981. The reversal of 25274978 is 87947252.

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, 332528 + ... + 332603.

It is an arithmetic number, because the mean of its divisors is an integer number (4988490).

Almost surely, 2^25274978 is an apocalyptic number.

25274978 is a deficient number, since it is larger than the sum of its proper divisors (14632942).

25274978 is a wasteful number, since it uses less digits than its factorization.

25274978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665152.

The product of its digits is 282240, while the sum is 44.

The square root of 25274978 is about 5027.4226001004. The cubic root of 25274978 is about 293.4699211804.

The spelling of 25274978 in words is "twenty-five million, two hundred seventy-four thousand, nine hundred seventy-eight".