1025506355511 has 16 divisors (see below), whose sum is σ = 1503390855168. Its totient is φ = 616625150400.

The previous prime is 1025506355501. The next prime is 1025506355513. The reversal of 1025506355511 is 1155536055201.

It is not a de Polignac number, because 1025506355511 - 2¹³ = 1025506347319 is a prime.

It is a super-2 number, since 2×1025506355511² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1025506355511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025506355513) 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, 122342070 + ... + 122350451.

It is an arithmetic number, because the mean of its divisors is an integer number (93961928448).

Almost surely, 2^{1025506355511} is an apocalyptic number.

1025506355511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1025506355511 is a deficient number, since it is larger than the sum of its proper divisors (477884499657).

1025506355511 is a wasteful number, since it uses less digits than its factorization.

1025506355511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244692662.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 1025506355511 in words is "one trillion, twenty-five billion, five hundred six million, three hundred fifty-five thousand, five hundred eleven".