1011220510425 has 12 divisors (see below), whose sum is σ = 1671884577360. Its totient is φ = 539317605520.

The previous prime is 1011220510411. The next prime is 1011220510457. The reversal of 1011220510425 is 5240150221101.

It is a happy number.

It is not a de Polignac number, because 1011220510425 - 2⁸ = 1011220510169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011220510395 and 1011220510404.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6741469995 + ... + 6741470144.

It is an arithmetic number, because the mean of its divisors is an integer number (139323714780).

Almost surely, 2^{1011220510425} is an apocalyptic number.

1011220510425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011220510425 is a deficient number, since it is larger than the sum of its proper divisors (660664066935).

1011220510425 is a wasteful number, since it uses less digits than its factorization.

1011220510425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13482940152 (or 13482940147 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 1011220510425 its reverse (5240150221101), we get a palindrome (6251370731526).

The spelling of 1011220510425 in words is "one trillion, eleven billion, two hundred twenty million, five hundred ten thousand, four hundred twenty-five".