25055505 has 12 divisors (see below), whose sum is σ = 43429620. Its totient is φ = 13362912.

The previous prime is 25055491. The next prime is 25055557. The reversal of 25055505 is 50555052.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18870336 + 6185169 = 4344^2 + 2487^2 .

It is not a de Polignac number, because 25055505 - 2⁴ = 25055489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278350 + ... + 278439.

It is an arithmetic number, because the mean of its divisors is an integer number (3619135).

Almost surely, 2^25055505 is an apocalyptic number.

It is an amenable number.

25055505 is a deficient number, since it is larger than the sum of its proper divisors (18374115).

25055505 is a wasteful number, since it uses less digits than its factorization.

25055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556800 (or 556797 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 25055505 is about 5005.5474226102. The cubic root of 25055505 is about 292.6180106765.

It can be divided in two parts, 250 and 55505, that added together give a palindrome (55755).

The spelling of 25055505 in words is "twenty-five million, fifty-five thousand, five hundred five".