25494428 has 12 divisors (see below), whose sum is σ = 46963560. Its totient is φ = 12076272.

The previous prime is 25494421. The next prime is 25494439. The reversal of 25494428 is 82449452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 25494391 and 25494400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25494421) 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, 167651 + ... + 167802.

It is an arithmetic number, because the mean of its divisors is an integer number (3913630).

Almost surely, 2^25494428 is an apocalyptic number.

It is an amenable number.

25494428 is a deficient number, since it is larger than the sum of its proper divisors (21469132).

25494428 is a wasteful number, since it uses less digits than its factorization.

25494428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335476 (or 335474 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 25494428 is about 5049.2007288283. The cubic root of 25494428 is about 294.3168256835.

The spelling of 25494428 in words is "twenty-five million, four hundred ninety-four thousand, four hundred twenty-eight".