1425800123878 has 16 divisors (see below), whose sum is σ = 2303238542976. Its totient is φ = 658055036160.

The previous prime is 1425800123863. The next prime is 1425800123893. The reversal of 1425800123878 is 8783210085241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1425800123863) and next prime (1425800123893).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234838 + ... + 3649078.

It is an arithmetic number, because the mean of its divisors is an integer number (143952408936).

Almost surely, 2^{1425800123878} is an apocalyptic number.

1425800123878 is a deficient number, since it is larger than the sum of its proper divisors (877438419098).

1425800123878 is a wasteful number, since it uses less digits than its factorization.

1425800123878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546639.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 1425800123878 in words is "one trillion, four hundred twenty-five billion, eight hundred million, one hundred twenty-three thousand, eight hundred seventy-eight".