1225541386524 has 192 divisors, whose sum is σ = 3529733630976. Its totient is φ = 322282008576.

The previous prime is 1225541386501. The next prime is 1225541386561. The reversal of 1225541386524 is 4256831455221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1010338542 + ... + 1010339754.

It is an arithmetic number, because the mean of its divisors is an integer number (18384029328).

Almost surely, 2^{1225541386524} is an apocalyptic number.

1225541386524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225541386524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1764866815488).

1225541386524 is an abundant number, since it is smaller than the sum of its proper divisors (2304192244452).

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

1225541386524 is a wasteful number, since it uses less digits than its factorization.

1225541386524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164 (or 3162 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 48.

The spelling of 1225541386524 in words is "one trillion, two hundred twenty-five billion, five hundred forty-one million, three hundred eighty-six thousand, five hundred twenty-four".