25506025 has 12 divisors (see below), whose sum is σ = 32648704. Its totient is φ = 19746000.

The previous prime is 25505989. The next prime is 25506049. The reversal of 25506025 is 52060552.

It is not a de Polignac number, because 25506025 - 2¹³ = 25497833 is a prime.

It is a super-2 number, since 2×25506025² = 1301114622601250, 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 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 11 ways as a sum of consecutive naturals, for example, 15681 + ... + 17230.

Almost surely, 2^25506025 is an apocalyptic number.

25506025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25506025 is a deficient number, since it is larger than the sum of its proper divisors (7142679).

25506025 is a wasteful number, since it uses less digits than its factorization.

25506025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32952 (or 32947 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25506025 is about 5050.3489978416. The cubic root of 25506025 is about 294.3614455618.

Adding to 25506025 its reverse (52060552), we get a palindrome (77566577).

The spelling of 25506025 in words is "twenty-five million, five hundred six thousand, twenty-five".