25260505 has 8 divisors (see below), whose sum is σ = 31290624. Its totient is φ = 19556400.

The previous prime is 25260503. The next prime is 25260517. The reversal of 25260505 is 50506252.

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

It is not a de Polignac number, because 25260505 - 2¹ = 25260503 is a prime.

It is a super-2 number, since 2×25260505² = 1276186225710050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25260505.

It is not an unprimeable number, because it can be changed into a prime (25260503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81331 + ... + 81640.

It is an arithmetic number, because the mean of its divisors is an integer number (3911328).

Almost surely, 2^25260505 is an apocalyptic number.

It is an amenable number.

25260505 is a deficient number, since it is larger than the sum of its proper divisors (6030119).

25260505 is a wasteful number, since it uses less digits than its factorization.

25260505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163007.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25260505 is about 5025.9829884312. The cubic root of 25260505 is about 293.4138947400.

Adding to 25260505 its reverse (50506252), we get a palindrome (75766757).

The spelling of 25260505 in words is "twenty-five million, two hundred sixty thousand, five hundred five".