1025230026421 has 16 divisors (see below), whose sum is σ = 1115025634224. Its totient is φ = 938717835264.

The previous prime is 1025230026389. The next prime is 1025230026451. The reversal of 1025230026421 is 1246200325201.

It can be written as a sum of positive squares in 8 ways, for example, as 685940086225 + 339289940196 = 828215^2 + 582486^2 .

It is not a de Polignac number, because 1025230026421 - 2⁵ = 1025230026389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1025230026421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025230026451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4771521 + ... + 4981753.

It is an arithmetic number, because the mean of its divisors is an integer number (69689102139).

Almost surely, 2^{1025230026421} is an apocalyptic number.

It is an amenable number.

1025230026421 is a deficient number, since it is larger than the sum of its proper divisors (89795607803).

1025230026421 is a wasteful number, since it uses less digits than its factorization.

1025230026421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218040.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 1025230026421 in words is "one trillion, twenty-five billion, two hundred thirty million, twenty-six thousand, four hundred twenty-one".