26725247425 has 6 divisors (see below), whose sum is σ = 33139306838. Its totient is φ = 21380197920.

The previous prime is 26725247389. The next prime is 26725247429. The reversal of 26725247425 is 52474252762.

It can be written as a sum of positive squares in 3 ways, for example, as 443649969 + 26281597456 = 21063^2 + 162116^2 .

It is not a de Polignac number, because 26725247425 - 2⁹ = 26725246913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26725247429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 534504924 + ... + 534504973.

Almost surely, 2^26725247425 is an apocalyptic number.

26725247425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26725247425 is a deficient number, since it is larger than the sum of its proper divisors (6414059413).

26725247425 is a wasteful number, since it uses less digits than its factorization.

26725247425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069009907 (or 1069009902 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 46.

The spelling of 26725247425 in words is "twenty-six billion, seven hundred twenty-five million, two hundred forty-seven thousand, four hundred twenty-five".