102511412225 has 6 divisors (see below), whose sum is σ = 127114151190. Its totient is φ = 82009129760.

The previous prime is 102511412209. The next prime is 102511412257. The reversal of 102511412225 is 522214115201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 364695409 + 102146716816 = 19097^2 + 319604^2 .

It is not a de Polignac number, because 102511412225 - 2⁴ = 102511412209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102511412194 and 102511412203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2050228220 + ... + 2050228269.

It is an arithmetic number, because the mean of its divisors is an integer number (21185691865).

Almost surely, 2^102511412225 is an apocalyptic number.

It is an amenable number.

102511412225 is a deficient number, since it is larger than the sum of its proper divisors (24602738965).

102511412225 is an equidigital number, since it uses as much as digits as its factorization.

102511412225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100456499 (or 4100456494 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 102511412225 its reverse (522214115201), we get a palindrome (624725527426).

The spelling of 102511412225 in words is "one hundred two billion, five hundred eleven million, four hundred twelve thousand, two hundred twenty-five".