1401125616 has 120 divisors (see below), whose sum is σ = 4303246896. Its totient is φ = 422046720.

The previous prime is 1401125611. The next prime is 1401125629. The reversal of 1401125616 is 6165211041.

1401125616 is a `hidden beast` number, since 1 + 40 + 1 + 1 + 2 + 5 + 616 = 666.

It is a super-2 number, since 2×1401125616² = 3926305983622758912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1401125616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401125611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271476 + ... + 276588.

Almost surely, 2^1401125616 is an apocalyptic number.

1401125616 is a gapful number since it is divisible by the number (16) 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 1401125616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151623448).

1401125616 is an abundant number, since it is smaller than the sum of its proper divisors (2902121280).

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

1401125616 is a wasteful number, since it uses less digits than its factorization.

1401125616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1401125616 is about 37431.6125220381. The cubic root of 1401125616 is about 1118.9886746644.

Adding to 1401125616 its reverse (6165211041), we get a palindrome (7566336657).

The spelling of 1401125616 in words is "one billion, four hundred one million, one hundred twenty-five thousand, six hundred sixteen".