25400022106 has 16 divisors (see below), whose sum is σ = 38635992360. Its totient is φ = 12522332160.

The previous prime is 25400022079. The next prime is 25400022121. The reversal of 25400022106 is 60122000452.

It can be written as a sum of positive squares in 4 ways, for example, as 14820871081 + 10579151025 = 121741^2 + 102855^2 .

It is a super-2 number, since 2×25400022106² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191175 + ... + 295546.

Almost surely, 2^25400022106 is an apocalyptic number.

25400022106 is a deficient number, since it is larger than the sum of its proper divisors (13235970254).

25400022106 is a wasteful number, since it uses less digits than its factorization.

25400022106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487089.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 25400022106 its reverse (60122000452), we get a palindrome (85522022558).

The spelling of 25400022106 in words is "twenty-five billion, four hundred million, twenty-two thousand, one hundred six".