1225235427451 has 32 divisors (see below), whose sum is σ = 1560807360000. Its totient is φ = 936321265152.

The previous prime is 1225235427431. The next prime is 1225235427463. The reversal of 1225235427451 is 1547245325221.

It is not a de Polignac number, because 1225235427451 - 2¹⁹ = 1225234903163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225235427398 and 1225235427407.

It is not an unprimeable number, because it can be changed into a prime (1225235427421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44525685 + ... + 44553193.

It is an arithmetic number, because the mean of its divisors is an integer number (48775230000).

Almost surely, 2^{1225235427451} is an apocalyptic number.

1225235427451 is a deficient number, since it is larger than the sum of its proper divisors (335571932549).

1225235427451 is a wasteful number, since it uses less digits than its factorization.

1225235427451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47251.

The product of its digits is 672000, while the sum is 43.

The spelling of 1225235427451 in words is "one trillion, two hundred twenty-five billion, two hundred thirty-five million, four hundred twenty-seven thousand, four hundred fifty-one".