1021305550425 has 12 divisors (see below), whose sum is σ = 1688558510160. Its totient is φ = 544696293520.

The previous prime is 1021305550399. The next prime is 1021305550457. The reversal of 1021305550425 is 5240555031201.

It is not a de Polignac number, because 1021305550425 - 2⁷ = 1021305550297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6808703595 + ... + 6808703744.

It is an arithmetic number, because the mean of its divisors is an integer number (140713209180).

Almost surely, 2^{1021305550425} is an apocalyptic number.

1021305550425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021305550425 is a deficient number, since it is larger than the sum of its proper divisors (667252959735).

1021305550425 is a wasteful number, since it uses less digits than its factorization.

1021305550425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617407352 (or 13617407347 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 1021305550425 in words is "one trillion, twenty-one billion, three hundred five million, five hundred fifty thousand, four hundred twenty-five".