25250505 has 32 divisors (see below), whose sum is σ = 46649088. Its totient is φ = 11424000.

The previous prime is 25250501. The next prime is 25250531. The reversal of 25250505 is 50505252.

It is not a de Polignac number, because 25250505 - 2² = 25250501 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25250501) 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, 9415 + ... + 11795.

It is an arithmetic number, because the mean of its divisors is an integer number (1457784).

Almost surely, 2^25250505 is an apocalyptic number.

It is an amenable number.

25250505 is a deficient number, since it is larger than the sum of its proper divisors (21398583).

25250505 is a wasteful number, since it uses less digits than its factorization.

25250505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 25250505 is about 5024.9880596873. The cubic root of 25250505 is about 293.3751712305.

Adding to 25250505 its reverse (50505252), we get a palindrome (75755757).

The spelling of 25250505 in words is "twenty-five million, two hundred fifty thousand, five hundred five".