25029428 has 12 divisors (see below), whose sum is σ = 45706080. Its totient is φ = 11970552.

The previous prime is 25029421. The next prime is 25029461. The reversal of 25029428 is 82492052.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25029394 and 25029403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25029421) 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, 135938 + ... + 136121.

It is an arithmetic number, because the mean of its divisors is an integer number (3808840).

Almost surely, 2^25029428 is an apocalyptic number.

It is an amenable number.

25029428 is a deficient number, since it is larger than the sum of its proper divisors (20676652).

25029428 is a wasteful number, since it uses less digits than its factorization.

25029428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272086 (or 272084 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25029428 is about 5002.9419345021. The cubic root of 25029428 is about 292.5164594921.

The spelling of 25029428 in words is "twenty-five million, twenty-nine thousand, four hundred twenty-eight".