1425035021861 has 12 divisors (see below), whose sum is σ = 1580222424396. Its totient is φ = 1284021889920.

The previous prime is 1425035021843. The next prime is 1425035021897. The reversal of 1425035021861 is 1681205305241.

It can be written as a sum of positive squares in 2 ways, for example, as 49270236961 + 1375764784900 = 221969^2 + 1172930^2 .

It is not a de Polignac number, because 1425035021861 - 2⁶ = 1425035021797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425035021261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52097606 + ... + 52124951.

It is an arithmetic number, because the mean of its divisors is an integer number (131685202033).

Almost surely, 2^{1425035021861} is an apocalyptic number.

1425035021861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1425035021861 is a deficient number, since it is larger than the sum of its proper divisors (155187402535).

1425035021861 is a wasteful number, since it uses less digits than its factorization.

1425035021861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104222692 (or 104222681 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 1425035021861 in words is "one trillion, four hundred twenty-five billion, thirty-five million, twenty-one thousand, eight hundred sixty-one".