1420105613625 has 24 divisors (see below), whose sum is σ = 2559977054856. Its totient is φ = 757389660000.

The previous prime is 1420105613617. The next prime is 1420105613629. The reversal of 1420105613625 is 5263165010241.

1420105613625 is a `hidden beast` number, since 1 + 4 + 2 + 0 + 10 + 5 + 6 + 13 + 625 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2967743529 + 1417137870096 = 54477^2 + 1190436^2 .

It is not a de Polignac number, because 1420105613625 - 2³ = 1420105613617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420105613625.

It is not an unprimeable number, because it can be changed into a prime (1420105613629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631156926 + ... + 631159175.

It is an arithmetic number, because the mean of its divisors is an integer number (106665710619).

Almost surely, 2^{1420105613625} is an apocalyptic number.

1420105613625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420105613625 is a deficient number, since it is larger than the sum of its proper divisors (1139871441231).

1420105613625 is a wasteful number, since it uses less digits than its factorization.

1420105613625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262316122 (or 1262316109 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1420105613625 in words is "one trillion, four hundred twenty billion, one hundred five million, six hundred thirteen thousand, six hundred twenty-five".