25875551 has 16 divisors (see below), whose sum is σ = 29235360. Its totient is φ = 22740480.

The previous prime is 25875541. The next prime is 25875559. The reversal of 25875551 is 15557852.

It is a cyclic number.

It is not a de Polignac number, because 25875551 - 2¹⁴ = 25859167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25875559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22355 + ... + 23483.

It is an arithmetic number, because the mean of its divisors is an integer number (1827210).

Almost surely, 2^25875551 is an apocalyptic number.

25875551 is a deficient number, since it is larger than the sum of its proper divisors (3359809).

25875551 is a wasteful number, since it uses less digits than its factorization.

25875551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226.

The product of its digits is 70000, while the sum is 38.

The square root of 25875551 is about 5086.8016474008. The cubic root of 25875551 is about 295.7761844422.

The spelling of 25875551 in words is "twenty-five million, eight hundred seventy-five thousand, five hundred fifty-one".