1225203130251 has 80 divisors (see below), whose sum is σ = 1925845447680. Its totient is φ = 775293560640.

The previous prime is 1225203130183. The next prime is 1225203130267. The reversal of 1225203130251 is 1520313025221.

1225203130251 is a `hidden beast` number, since 1 + 2 + 2 + 520 + 3 + 130 + 2 + 5 + 1 = 666.

It is not a de Polignac number, because 1225203130251 - 2¹⁷ = 1225202999179 is a prime.

It is a super-2 number, since 2×1225203130251² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1225203130951) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28948261 + ... + 28990553.

It is an arithmetic number, because the mean of its divisors is an integer number (24073068096).

Almost surely, 2^{1225203130251} is an apocalyptic number.

1225203130251 is a deficient number, since it is larger than the sum of its proper divisors (700642317429).

1225203130251 is a wasteful number, since it uses less digits than its factorization.

1225203130251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42558 (or 42549 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1225203130251 its reverse (1520313025221), we get a palindrome (2745516155472).

The spelling of 1225203130251 in words is "one trillion, two hundred twenty-five billion, two hundred three million, one hundred thirty thousand, two hundred fifty-one".