1025986418816 has 16 divisors (see below), whose sum is σ = 2043957318990. Its totient is φ = 512993209344.

The previous prime is 1025986418797. The next prime is 1025986418839. The reversal of 1025986418816 is 6188146895201.

It can be written as a sum of positive squares in only one way, i.e., 895445838400 + 130540580416 = 946280^2 + 361304^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4007759321 + ... + 4007759576.

Almost surely, 2^{1025986418816} is an apocalyptic number.

1025986418816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1025986418816 is a deficient number, since it is larger than the sum of its proper divisors (1017970900174).

1025986418816 is an frugal number, since it uses more digits than its factorization.

1025986418816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015518911 (or 8015518899 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 59.

The spelling of 1025986418816 in words is "one trillion, twenty-five billion, nine hundred eighty-six million, four hundred eighteen thousand, eight hundred sixteen".