25278025 has 12 divisors (see below), whose sum is σ = 31744000. Its totient is φ = 19964880.

The previous prime is 25277971. The next prime is 25278049. The reversal of 25278025 is 52087252.

It is not a de Polignac number, because 25278025 - 2¹³ = 25269833 is a prime.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 4425 + ... + 8374.

Almost surely, 2^25278025 is an apocalyptic number.

25278025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25278025 is a deficient number, since it is larger than the sum of its proper divisors (6465975).

25278025 is a wasteful number, since it uses less digits than its factorization.

25278025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12888 (or 12883 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25278025 is about 5027.7256289499. The cubic root of 25278025 is about 293.4817136987.

The spelling of 25278025 in words is "twenty-five million, two hundred seventy-eight thousand, twenty-five".