1025358877872 has 160 divisors (see below), whose sum is σ = 3366197644800. Its totient is φ = 292734404352.

The previous prime is 1025358877859. The next prime is 1025358877877. The reversal of 1025358877872 is 2787788535201.

1025358877872 is a `hidden beast` number, since 10 + 2 + 535 + 8 + 8 + 7 + 7 + 87 + 2 = 666.

It is a super-2 number, since 2×1025358877872² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1025358877877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3822654 + ... + 4082082.

It is an arithmetic number, because the mean of its divisors is an integer number (21038735280).

Almost surely, 2^{1025358877872} is an apocalyptic number.

1025358877872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025358877872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683098822400).

1025358877872 is an abundant number, since it is smaller than the sum of its proper divisors (2340838766928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025358877872 is a wasteful number, since it uses less digits than its factorization.

1025358877872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260760 (or 260748 counting only the distinct ones).

The product of its (nonzero) digits is 52684800, while the sum is 63.

The spelling of 1025358877872 in words is "one trillion, twenty-five billion, three hundred fifty-eight million, eight hundred seventy-seven thousand, eight hundred seventy-two".