25575748387 has 8 divisors (see below), whose sum is σ = 29231038976. Its totient is φ = 21920860872.

The previous prime is 25575748369. The next prime is 25575748397. The reversal of 25575748387 is 78384757552.

It is a happy number.

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 25575748387 - 2⁷ = 25575748259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25575748397) 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, 50308 + ... + 231694.

It is an arithmetic number, because the mean of its divisors is an integer number (3653879872).

Almost surely, 2^25575748387 is an apocalyptic number.

25575748387 is a deficient number, since it is larger than the sum of its proper divisors (3655290589).

25575748387 is a wasteful number, since it uses less digits than its factorization.

25575748387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201537.

The product of its digits is 65856000, while the sum is 61.

The spelling of 25575748387 in words is "twenty-five billion, five hundred seventy-five million, seven hundred forty-eight thousand, three hundred eighty-seven".