1025134401400 has 24 divisors (see below), whose sum is σ = 2383437483720. Its totient is φ = 410053760480.

The previous prime is 1025134401373. The next prime is 1025134401407. The reversal of 1025134401400 is 41044315201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025134401407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2562835804 + ... + 2562836203.

It is an arithmetic number, because the mean of its divisors is an integer number (99309895155).

Almost surely, 2^{1025134401400} is an apocalyptic number.

1025134401400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025134401400 is an abundant number, since it is smaller than the sum of its proper divisors (1358303082320).

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

1025134401400 is a wasteful number, since it uses less digits than its factorization.

1025134401400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125672023 (or 5125672014 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1025134401400 its reverse (41044315201), we get a palindrome (1066178716601).

The spelling of 1025134401400 in words is "one trillion, twenty-five billion, one hundred thirty-four million, four hundred one thousand, four hundred".