25424125 has 8 divisors (see below), whose sum is σ = 31729464. Its totient is φ = 20339200.

The previous prime is 25424111. The next prime is 25424149. The reversal of 25424125 is 52142452.

It can be written as a sum of positive squares in 4 ways, for example, as 2785561 + 22638564 = 1669^2 + 4758^2 .

It is not a de Polignac number, because 25424125 - 2⁵ = 25424093 is a prime.

It is a super-2 number, since 2×25424125² = 1292772264031250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25424125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101572 + ... + 101821.

It is an arithmetic number, because the mean of its divisors is an integer number (3966183).

Almost surely, 2^25424125 is an apocalyptic number.

25424125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25424125 is a deficient number, since it is larger than the sum of its proper divisors (6305339).

25424125 is an equidigital number, since it uses as much as digits as its factorization.

25424125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203408 (or 203398 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 25424125 is about 5042.2341278445. The cubic root of 25424125 is about 294.0460422747.

Adding to 25424125 its reverse (52142452), we get a palindrome (77566577).

The spelling of 25424125 in words is "twenty-five million, four hundred twenty-four thousand, one hundred twenty-five".