25207428 has 24 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 8368000.

The previous prime is 25207423. The next prime is 25207439. The reversal of 25207428 is 82470252.

It is a junction number, because it is equal to n+sod(n) for n = 25207395 and 25207404.

It is not an unprimeable number, because it can be changed into a prime (25207423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173 + ... + 7196.

It is an arithmetic number, because the mean of its divisors is an integer number (2460780).

Almost surely, 2^25207428 is an apocalyptic number.

It is an amenable number.

25207428 is an abundant number, since it is smaller than the sum of its proper divisors (33851292).

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

25207428 is a wasteful number, since it uses less digits than its factorization.

25207428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8627 (or 8625 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 25207428 is about 5020.6999512020. The cubic root of 25207428 is about 293.2082449894.

The spelling of 25207428 in words is "twenty-five million, two hundred seven thousand, four hundred twenty-eight".