25871202106 has 8 divisors (see below), whose sum is σ = 41089556340. Its totient is φ = 12174683328.

The previous prime is 25871202101. The next prime is 25871202107. The reversal of 25871202106 is 60120217852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25795250881 + 75951225 = 160609^2 + 8715^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 760917709 = 25871202106 / (2 + 5 + 8 + 7 + 1 + 2 + 0 + 2 + 1 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (25871202101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380458821 + ... + 380458888.

Almost surely, 2^25871202106 is an apocalyptic number.

25871202106 is a deficient number, since it is larger than the sum of its proper divisors (15218354234).

25871202106 is a wasteful number, since it uses less digits than its factorization.

25871202106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760917728.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 25871202106 its reverse (60120217852), we get a palindrome (85991419958).

The spelling of 25871202106 in words is "twenty-five billion, eight hundred seventy-one million, two hundred two thousand, one hundred six".