25245505 has 8 divisors (see below), whose sum is σ = 30325824. Its totient is φ = 20175600.

The previous prime is 25245499. The next prime is 25245523. The reversal of 25245505 is 50554252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25245505 - 2²¹ = 23148353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500 + ... + 8410.

It is an arithmetic number, because the mean of its divisors is an integer number (3790728).

Almost surely, 2^25245505 is an apocalyptic number.

It is an amenable number.

25245505 is a deficient number, since it is larger than the sum of its proper divisors (5080319).

25245505 is a wasteful number, since it uses less digits than its factorization.

25245505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25245505 is about 5024.4905214360. The cubic root of 25245505 is about 293.3558056418.

Adding to 25245505 its reverse (50554252), we get a palindrome (75799757).

It can be divided in two parts, 25245 and 505, that multiplied together give a triangular number (12748725 = T₅₀₄₉).

The spelling of 25245505 in words is "twenty-five million, two hundred forty-five thousand, five hundred five".