1225145023631 has 2 divisors, whose sum is σ = 1225145023632. Its totient is φ = 1225145023630.

The previous prime is 1225145023429. The next prime is 1225145023709. The reversal of 1225145023631 is 1363205415221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225145023631 is a prime.

It is a super-2 number, since 2×1225145023631² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1225145023591 and 1225145023600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225145026631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612572511815 + 612572511816.

It is an arithmetic number, because the mean of its divisors is an integer number (612572511816).

Almost surely, 2^{1225145023631} is an apocalyptic number.

1225145023631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225145023631 is an equidigital number, since it uses as much as digits as its factorization.

1225145023631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 1225145023631 in words is "one trillion, two hundred twenty-five billion, one hundred forty-five million, twenty-three thousand, six hundred thirty-one".