25380025 has 24 divisors (see below), whose sum is σ = 35185248. Its totient is φ = 18000000.

The previous prime is 25380011. The next prime is 25380059. The reversal of 25380025 is 52008352.

It is not a de Polignac number, because 25380025 - 2⁵ = 25379993 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10150 + ... + 12400.

It is an arithmetic number, because the mean of its divisors is an integer number (1466052).

Almost surely, 2^25380025 is an apocalyptic number.

25380025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25380025 is a deficient number, since it is larger than the sum of its proper divisors (9805223).

25380025 is a wasteful number, since it uses less digits than its factorization.

25380025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25380025 is about 5037.8591683373. The cubic root of 25380025 is about 293.8759291066.

Adding to 25380025 its reverse (52008352), we get a palindrome (77388377).

The spelling of 25380025 in words is "twenty-five million, three hundred eighty thousand, twenty-five".