25342278 has 16 divisors (see below), whose sum is σ = 54583536. Its totient is φ = 7797600.

The previous prime is 25342271. The next prime is 25342279. The reversal of 25342278 is 87224352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25342271) 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, 162373 + ... + 162528.

It is an arithmetic number, because the mean of its divisors is an integer number (3411471).

Almost surely, 2^25342278 is an apocalyptic number.

25342278 is an abundant number, since it is smaller than the sum of its proper divisors (29241258).

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

25342278 is a wasteful number, since it uses less digits than its factorization.

25342278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324919.

The product of its digits is 26880, while the sum is 33.

The square root of 25342278 is about 5034.1114409596. Note that the first 3 decimals coincide. The cubic root of 25342278 is about 293.7301656745.

It can be divided in two parts, 253422 and 78, that multiplied together give a square (19766916 = 4446²).

The spelling of 25342278 in words is "twenty-five million, three hundred forty-two thousand, two hundred seventy-eight".