25434377369 has 8 divisors (see below), whose sum is σ = 25729478280. Its totient is φ = 25139483776.

The previous prime is 25434377363. The next prime is 25434377383. The reversal of 25434377369 is 96377343452.

It can be written as a sum of positive squares in 4 ways, for example, as 141610000 + 25292767369 = 11900^2 + 159037^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25434377369 - 2¹² = 25434373273 is a prime.

It is a super-2 number, since 2×25434377369² (a number of 22 digits) 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 25434377369.

It is not an unprimeable number, because it can be changed into a prime (25434377363) 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, 202127 + ... + 302859.

It is an arithmetic number, because the mean of its divisors is an integer number (3216184785).

Almost surely, 2^25434377369 is an apocalyptic number.

It is an amenable number.

25434377369 is a deficient number, since it is larger than the sum of its proper divisors (295100911).

25434377369 is a wasteful number, since it uses less digits than its factorization.

25434377369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103659.

The product of its digits is 11430720, while the sum is 53.

The spelling of 25434377369 in words is "twenty-five billion, four hundred thirty-four million, three hundred seventy-seven thousand, three hundred sixty-nine".