25748545 has 4 divisors (see below), whose sum is σ = 30898260. Its totient is φ = 20598832.

The previous prime is 25748539. The next prime is 25748551. The reversal of 25748545 is 54584752.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25748539) and next prime (25748551).

It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 20007729 = 2396^2 + 4473^2 .

It is a cyclic number.

It is not a de Polignac number, because 25748545 - 2²¹ = 23651393 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25748498 and 25748507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574850 + ... + 2574859.

It is an arithmetic number, because the mean of its divisors is an integer number (7724565).

Almost surely, 2^25748545 is an apocalyptic number.

It is an amenable number.

25748545 is a deficient number, since it is larger than the sum of its proper divisors (5149715).

25748545 is an equidigital number, since it uses as much as digits as its factorization.

25748545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149714.

The product of its digits is 224000, while the sum is 40.

The square root of 25748545 is about 5074.3024151109. The cubic root of 25748545 is about 295.2914671713.

The spelling of 25748545 in words is "twenty-five million, seven hundred forty-eight thousand, five hundred forty-five".