107851421225 has 12 divisors (see below), whose sum is σ = 138347341260. Its totient is φ = 83305924800.

The previous prime is 107851421213. The next prime is 107851421287. The reversal of 107851421225 is 522124158701.

It can be written as a sum of positive squares in 6 ways, for example, as 3532756969 + 104318664256 = 59437^2 + 322984^2 .

It is not a de Polignac number, because 107851421225 - 2⁸ = 107851420969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74379566 + ... + 74381015.

It is an arithmetic number, because the mean of its divisors is an integer number (11528945105).

Almost surely, 2^107851421225 is an apocalyptic number.

It is an amenable number.

107851421225 is a deficient number, since it is larger than the sum of its proper divisors (30495920035).

107851421225 is a wasteful number, since it uses less digits than its factorization.

107851421225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148760620 (or 148760615 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

Adding to 107851421225 its reverse (522124158701), we get a palindrome (629975579926).

The spelling of 107851421225 in words is "one hundred seven billion, eight hundred fifty-one million, four hundred twenty-one thousand, two hundred twenty-five".