1294425001984 has 117 divisors (see below), whose sum is σ = 2685252196263. Its totient is φ = 623875424256.

The previous prime is 1294425001979. The next prime is 1294425001997. The reversal of 1294425001984 is 4891005244921.

The square root of 1294425001984 is 1137728.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 542167142400 + 752257859584 = 736320^2 + 867328^2 .

It is a super-2 number, since 2×1294425001984² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2111622862 + ... + 2111623474.

Almost surely, 2^{1294425001984} is an apocalyptic number.

1294425001984 is the 1137728-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1294425001984

1294425001984 is an abundant number, since it is smaller than the sum of its proper divisors (1390827194279).

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

1294425001984 is an frugal number, since it uses more digits than its factorization.

1294425001984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

Multiplying 1294425001984 by its sum of digits (49), we get a square (63426825097216 = 7964096²).

The spelling of 1294425001984 in words is "one trillion, two hundred ninety-four billion, four hundred twenty-five million, one thousand, nine hundred eighty-four".