25455523 has 4 divisors (see below), whose sum is σ = 25702768. Its totient is φ = 25208280.

The previous prime is 25455517. The next prime is 25455571. The reversal of 25455523 is 32555452.

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 25455523 - 2¹⁷ = 25324451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25455323) 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, 123468 + ... + 123673.

It is an arithmetic number, because the mean of its divisors is an integer number (6425692).

Almost surely, 2^25455523 is an apocalyptic number.

25455523 is a deficient number, since it is larger than the sum of its proper divisors (247245).

25455523 is a wasteful number, since it uses less digits than its factorization.

25455523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247244.

The product of its digits is 30000, while the sum is 31.

The square root of 25455523 is about 5045.3466679704. The cubic root of 25455523 is about 294.1670383711.

The spelling of 25455523 in words is "twenty-five million, four hundred fifty-five thousand, five hundred twenty-three".