25280051 has 4 divisors (see below), whose sum is σ = 26610600. Its totient is φ = 23949504.

The previous prime is 25280041. The next prime is 25280077. The reversal of 25280051 is 15008252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25280051 - 2¹⁰ = 25279027 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25279999 and 25280026.

It is not an unprimeable number, because it can be changed into a prime (25280041) 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 3 ways as a sum of consecutive naturals, for example, 665246 + ... + 665283.

It is an arithmetic number, because the mean of its divisors is an integer number (6652650).

Almost surely, 2^25280051 is an apocalyptic number.

25280051 is a deficient number, since it is larger than the sum of its proper divisors (1330549).

25280051 is a wasteful number, since it uses less digits than its factorization.

25280051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330548.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 25280051 is about 5027.9271076657. The cubic root of 25280051 is about 293.4895542119.

The spelling of 25280051 in words is "twenty-five million, two hundred eighty thousand, fifty-one".