1021425225513 has 64 divisors (see below), whose sum is σ = 1754158448640. Its totient is φ = 513074476800.

The previous prime is 1021425225461. The next prime is 1021425225533. The reversal of 1021425225513 is 3155225241201.

1021425225513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021425225513 - 2¹⁰ = 1021425224489 is a prime.

It is a super-2 number, since 2×1021425225513² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021425225533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8800503 + ... + 8915811.

It is an arithmetic number, because the mean of its divisors is an integer number (27408725760).

Almost surely, 2^{1021425225513} is an apocalyptic number.

It is an amenable number.

1021425225513 is a deficient number, since it is larger than the sum of its proper divisors (732733223127).

1021425225513 is a wasteful number, since it uses less digits than its factorization.

1021425225513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116598.

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

The spelling of 1021425225513 in words is "one trillion, twenty-one billion, four hundred twenty-five million, two hundred twenty-five thousand, five hundred thirteen".