1251425005398 has 16 divisors (see below), whose sum is σ = 2780944456560. Its totient is φ = 417141668448.

The previous prime is 1251425005379. The next prime is 1251425005409. The reversal of 1251425005398 is 8935005241521.

1251425005398 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 4 + 2 + 500 + 53 + 98 = 666.

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, 11587268515 + ... + 11587268622.

It is an arithmetic number, because the mean of its divisors is an integer number (173809028535).

Almost surely, 2^{1251425005398} is an apocalyptic number.

1251425005398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1251425005398 is an abundant number, since it is smaller than the sum of its proper divisors (1529519451162).

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

1251425005398 is a wasteful number, since it uses less digits than its factorization.

1251425005398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23174537148 (or 23174537142 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 1251425005398 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five thousand, three hundred ninety-eight".