25775144725 has 18 divisors (see below), whose sum is σ = 35130887330. Its totient is φ = 18745557600.

The previous prime is 25775144719. The next prime is 25775144743. The reversal of 25775144725 is 52744157752.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 49871844 + 25725272881 = 7062^2 + 160391^2 .

It is not a de Polignac number, because 25775144725 - 2¹³ = 25775136533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4257330 + ... + 4263379.

Almost surely, 2^25775144725 is an apocalyptic number.

25775144725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25775144725 is a deficient number, since it is larger than the sum of its proper divisors (9355742605).

25775144725 is a wasteful number, since it uses less digits than its factorization.

25775144725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520741 (or 8520725 counting only the distinct ones).

The product of its digits is 2744000, while the sum is 49.

The spelling of 25775144725 in words is "twenty-five billion, seven hundred seventy-five million, one hundred forty-four thousand, seven hundred twenty-five".