25364778 has 16 divisors (see below), whose sum is σ = 51204960. Its totient is φ = 8375696.

The previous prime is 25364777. The next prime is 25364783. The reversal of 25364778 is 87746352.

It is not an unprimeable number, because it can be changed into a prime (25364777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19113 + ... + 20396.

It is an arithmetic number, because the mean of its divisors is an integer number (3200310).

Almost surely, 2^25364778 is an apocalyptic number.

25364778 is an abundant number, since it is smaller than the sum of its proper divisors (25840182).

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

25364778 is a wasteful number, since it uses less digits than its factorization.

25364778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39621.

The product of its digits is 282240, while the sum is 42.

The square root of 25364778 is about 5036.3456990163. The cubic root of 25364778 is about 293.8170688565.

The spelling of 25364778 in words is "twenty-five million, three hundred sixty-four thousand, seven hundred seventy-eight".