1251425533434 has 32 divisors (see below), whose sum is σ = 2510893715904. Its totient is φ = 415803400320.

The previous prime is 1251425533433. The next prime is 1251425533439. The reversal of 1251425533434 is 4343355241521.

It is not an unprimeable number, because it can be changed into a prime (1251425533433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2263942 + ... + 2761934.

It is an arithmetic number, because the mean of its divisors is an integer number (78465428622).

Almost surely, 2^{1251425533434} is an apocalyptic number.

1251425533434 is an abundant number, since it is smaller than the sum of its proper divisors (1259468182470).

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

1251425533434 is a wasteful number, since it uses less digits than its factorization.

1251425533434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499342.

The product of its digits is 864000, while the sum is 42.

The spelling of 1251425533434 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five hundred thirty-three thousand, four hundred thirty-four".