1245457252400 has 120 divisors (see below), whose sum is σ = 3089380731264. Its totient is φ = 482011545600.

The previous prime is 1245457252397. The next prime is 1245457252439. The reversal of 1245457252400 is 42527545421.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90922352 + ... + 90936048.

Almost surely, 2^{1245457252400} is an apocalyptic number.

1245457252400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245457252400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544690365632).

1245457252400 is an abundant number, since it is smaller than the sum of its proper divisors (1843923478864).

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

1245457252400 is a wasteful number, since it uses less digits than its factorization.

1245457252400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21079 (or 21068 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 41.

The spelling of 1245457252400 in words is "one trillion, two hundred forty-five billion, four hundred fifty-seven million, two hundred fifty-two thousand, four hundred".