1225130215542 has 16 divisors (see below), whose sum is σ = 2450705756160. Its totient is φ = 408302517672.

The previous prime is 1225130215541. The next prime is 1225130215567. The reversal of 1225130215542 is 2455120315221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225130215541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18519442 + ... + 18585477.

It is an arithmetic number, because the mean of its divisors is an integer number (153169109760).

Almost surely, 2^{1225130215542} is an apocalyptic number.

1225130215542 is an abundant number, since it is smaller than the sum of its proper divisors (1225575540618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225130215542 is a wasteful number, since it uses less digits than its factorization.

1225130215542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37110427.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 1225130215542 in words is "one trillion, two hundred twenty-five billion, one hundred thirty million, two hundred fifteen thousand, five hundred forty-two".