1251325420000 has 60 divisors (see below), whose sum is σ = 3078448281216. Its totient is φ = 500530160000.

The previous prime is 1251325419941. The next prime is 1251325420021. The reversal of 1251325420000 is 245231521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31263136 + ... + 31303135.

Almost surely, 2^{1251325420000} is an apocalyptic number.

1251325420000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1251325420000 is an abundant number, since it is smaller than the sum of its proper divisors (1827122861216).

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

1251325420000 is an frugal number, since it uses more digits than its factorization.

1251325420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62566301 (or 62566278 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 1251325420000 in words is "one trillion, two hundred fifty-one billion, three hundred twenty-five million, four hundred twenty thousand".