25498945 has 8 divisors (see below), whose sum is σ = 30943080. Its totient is φ = 20169600.

The previous prime is 25498939. The next prime is 25498981. The reversal of 25498945 is 54989452.

It can be written as a sum of positive squares in 4 ways, for example, as 16641 + 25482304 = 129^2 + 5048^2 .

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

It is not a de Polignac number, because 25498945 - 2²¹ = 23401793 is a prime.

It is a super-2 number, since 2×25498945² = 1300392392226050, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 25498895 and 25498904.

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, 28206 + ... + 29095.

It is an arithmetic number, because the mean of its divisors is an integer number (3867885).

Almost surely, 2^25498945 is an apocalyptic number.

It is an amenable number.

25498945 is a deficient number, since it is larger than the sum of its proper divisors (5444135).

25498945 is an equidigital number, since it uses as much as digits as its factorization.

25498945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57395.

The product of its digits is 518400, while the sum is 46.

The square root of 25498945 is about 5049.6480075348. The cubic root of 25498945 is about 294.3342066134.

It can be divided in two parts, 254 and 98945, that added together give a palindrome (99199).

The spelling of 25498945 in words is "twenty-five million, four hundred ninety-eight thousand, nine hundred forty-five".