1425653221740 has 192 divisors, whose sum is σ = 4632742937088. Its totient is φ = 323740569600.

The previous prime is 1425653221721. The next prime is 1425653221747. The reversal of 1425653221740 is 471223565241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1425653221692 and 1425653221701.

It is not an unprimeable number, because it can be changed into a prime (1425653221747) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2066322 + ... + 2668518.

It is an arithmetic number, because the mean of its divisors is an integer number (24128869464).

Almost surely, 2^{1425653221740} is an apocalyptic number.

1425653221740 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 1425653221740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2316371468544).

1425653221740 is an abundant number, since it is smaller than the sum of its proper divisors (3207089715348).

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

1425653221740 is a wasteful number, since it uses less digits than its factorization.

1425653221740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602448 (or 602446 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

Adding to 1425653221740 its reverse (471223565241), we get a palindrome (1896876786981).

The spelling of 1425653221740 in words is "one trillion, four hundred twenty-five billion, six hundred fifty-three million, two hundred twenty-one thousand, seven hundred forty".