1025423554521 has 8 divisors (see below), whose sum is σ = 1367282987424. Its totient is φ = 683589912320.

The previous prime is 1025423554513. The next prime is 1025423554553. The reversal of 1025423554521 is 1254553245201.

1025423554521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025423554521 - 2³ = 1025423554513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1025423554521.

It is not an unprimeable number, because it can be changed into a prime (1025423554121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6354711 + ... + 6514076.

It is an arithmetic number, because the mean of its divisors is an integer number (170910373428).

Almost surely, 2^{1025423554521} is an apocalyptic number.

It is an amenable number.

1025423554521 is a deficient number, since it is larger than the sum of its proper divisors (341859432903).

1025423554521 is a wasteful number, since it uses less digits than its factorization.

1025423554521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895351.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 1025423554521 its reverse (1254553245201), we get a palindrome (2279976799722).

The spelling of 1025423554521 in words is "one trillion, twenty-five billion, four hundred twenty-three million, five hundred fifty-four thousand, five hundred twenty-one".