25425320 has 32 divisors (see below), whose sum is σ = 57369600. Its totient is φ = 10141248.

The previous prime is 25425311. The next prime is 25425329. The reversal of 25425320 is 2352452.

It is an interprime number because it is at equal distance from previous prime (25425311) and next prime (25425329).

It is not an unprimeable number, because it can be changed into a prime (25425329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18497 + ... + 19823.

It is an arithmetic number, because the mean of its divisors is an integer number (1792800).

Almost surely, 2^25425320 is an apocalyptic number.

25425320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25425320 is an abundant number, since it is smaller than the sum of its proper divisors (31944280).

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

25425320 is a wasteful number, since it uses less digits than its factorization.

25425320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25425320 is about 5042.3526255112. The cubic root of 25425320 is about 294.0506491787.

Adding to 25425320 its reverse (2352452), we get a palindrome (27777772).

The spelling of 25425320 in words is "twenty-five million, four hundred twenty-five thousand, three hundred twenty".