25880551 has 4 divisors (see below), whose sum is σ = 25912600. Its totient is φ = 25848504.

The previous prime is 25880537. The next prime is 25880573. The reversal of 25880551 is 15508852.

It is a happy number.

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 25880551 - 2¹⁹ = 25356263 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 (25880581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14781 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (6478150).

Almost surely, 2^25880551 is an apocalyptic number.

25880551 is a deficient number, since it is larger than the sum of its proper divisors (32049).

25880551 is an equidigital number, since it uses as much as digits as its factorization.

25880551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32048.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 25880551 is about 5087.2930916156. The cubic root of 25880551 is about 295.7952344156.

The spelling of 25880551 in words is "twenty-five million, eight hundred eighty thousand, five hundred fifty-one".