25505259 has 32 divisors (see below), whose sum is σ = 37997568. Its totient is φ = 15120000.

The previous prime is 25505231. The next prime is 25505261. The reversal of 25505259 is 95250552.

It is not a de Polignac number, because 25505259 - 2⁸ = 25505003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25505209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168834 + ... + 168984.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^25505259 is an apocalyptic number.

25505259 is a deficient number, since it is larger than the sum of its proper divisors (12492309).

25505259 is a wasteful number, since it uses less digits than its factorization.

25505259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 25505259 is about 5050.2731609290. The cubic root of 25505259 is about 294.3584987663.

The spelling of 25505259 in words is "twenty-five million, five hundred five thousand, two hundred fifty-nine".