3525722721400 has 288 divisors, whose sum is σ = 9563500062000. Its totient is φ = 1198533836800.

The previous prime is 3525722721379. The next prime is 3525722721401. The reversal of 3525722721400 is 41272275253.

It is a happy number.

It is a super-3 number, since 3×3525722721400³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3525722721401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 94715592 + ... + 94752808.

Almost surely, 2^{3525722721400} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3525722721400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4781750031000).

3525722721400 is an abundant number, since it is smaller than the sum of its proper divisors (6037777340600).

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

3525722721400 is a wasteful number, since it uses less digits than its factorization.

3525722721400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37427 (or 37401 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

Adding to 3525722721400 its reverse (41272275253), we get a palindrome (3566994996653).

The spelling of 3525722721400 in words is "three trillion, five hundred twenty-five billion, seven hundred twenty-two million, seven hundred twenty-one thousand, four hundred".