25375720869 has 6 divisors (see below), whose sum is σ = 36653819046. Its totient is φ = 16917147240.

The previous prime is 25375720831. The next prime is 25375720879. The reversal of 25375720869 is 96802757352.

25375720869 is a `hidden beast` number, since 2 + 5 + 3 + 7 + 572 + 0 + 8 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19301544900 + 6074175969 = 138930^2 + 77937^2 .

It is not a de Polignac number, because 25375720869 - 2¹¹ = 25375718821 is a prime.

It is a super-2 number, since 2×25375720869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25375720819) 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, 1409762262 + ... + 1409762279.

It is an arithmetic number, because the mean of its divisors is an integer number (6108969841).

Almost surely, 2^25375720869 is an apocalyptic number.

It is an amenable number.

25375720869 is a deficient number, since it is larger than the sum of its proper divisors (11278098177).

25375720869 is a wasteful number, since it uses less digits than its factorization.

25375720869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819524547 (or 2819524544 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 25375720869 in words is "twenty-five billion, three hundred seventy-five million, seven hundred twenty thousand, eight hundred sixty-nine".