1025402134400 has 192 divisors, whose sum is σ = 2973173707680. Its totient is φ = 342064373760.

The previous prime is 1025402134397. The next prime is 1025402134453. The reversal of 1025402134400 is 44312045201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025402134400.

It is a congruent number.

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, 210194 + ... + 1447406.

Almost surely, 2^{1025402134400} is an apocalyptic number.

1025402134400 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 1025402134400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486586853840).

1025402134400 is an abundant number, since it is smaller than the sum of its proper divisors (1947771573280).

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

1025402134400 is a wasteful number, since it uses less digits than its factorization.

1025402134400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237281 (or 1237264 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1025402134400 its reverse (44312045201), we get a palindrome (1069714179601).

The spelling of 1025402134400 in words is "one trillion, twenty-five billion, four hundred two million, one hundred thirty-four thousand, four hundred".