25409055 has 32 divisors (see below), whose sum is σ = 47001600. Its totient is φ = 11480832.

The previous prime is 25409009. The next prime is 25409077. The reversal of 25409055 is 55090452.

It is a happy number.

It is not a de Polignac number, because 25409055 - 2⁷ = 25408927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7986 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (1468800).

Almost surely, 2^25409055 is an apocalyptic number.

25409055 is a deficient number, since it is larger than the sum of its proper divisors (21592545).

25409055 is a wasteful number, since it uses less digits than its factorization.

25409055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 25409055 is about 5040.7395290771. The cubic root of 25409055 is about 293.9879327733.

The spelling of 25409055 in words is "twenty-five million, four hundred nine thousand, fifty-five".