1020425202541 has 4 divisors (see below), whose sum is σ = 1020428285184. Its totient is φ = 1020422119900.

The previous prime is 1020425202539. The next prime is 1020425202617. The reversal of 1020425202541 is 1452025240201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020425202541 - 2¹ = 1020425202539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020425902541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975565 + ... + 1729906.

It is an arithmetic number, because the mean of its divisors is an integer number (255107071296).

Almost surely, 2^{1020425202541} is an apocalyptic number.

It is an amenable number.

1020425202541 is a deficient number, since it is larger than the sum of its proper divisors (3082643).

1020425202541 is an equidigital number, since it uses as much as digits as its factorization.

1020425202541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082642.

The product of its (nonzero) digits is 6400, while the sum is 28.

The spelling of 1020425202541 in words is "one trillion, twenty billion, four hundred twenty-five million, two hundred two thousand, five hundred forty-one".