103225001645 has 4 divisors (see below), whose sum is σ = 123870001980. Its totient is φ = 82580001312.

The previous prime is 103225001617. The next prime is 103225001651. The reversal of 103225001645 is 546100522301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546100522301 = 52967 ⋅10310203.

It can be written as a sum of positive squares in 2 ways, for example, as 44938488169 + 58286513476 = 211987^2 + 241426^2 .

It is a cyclic number.

It is not a de Polignac number, because 103225001645 - 2²⁰ = 103223953069 is a prime.

It is a super-3 number, since 3×103225001645³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10322500160 + ... + 10322500169.

It is an arithmetic number, because the mean of its divisors is an integer number (30967500495).

Almost surely, 2^103225001645 is an apocalyptic number.

It is an amenable number.

103225001645 is a deficient number, since it is larger than the sum of its proper divisors (20645000335).

103225001645 is an equidigital number, since it uses as much as digits as its factorization.

103225001645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20645000334.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 103225001645 its reverse (546100522301), we get a palindrome (649325523946).

The spelling of 103225001645 in words is "one hundred three billion, two hundred twenty-five million, one thousand, six hundred forty-five".