1401250000 has 160 divisors (see below), whose sum is σ = 3632803200. Its totient is φ = 522000000.

The previous prime is 1401249959. The next prime is 1401250001. The reversal of 1401250000 is 521041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401250001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23749971 + ... + 23750029.

It is an arithmetic number, because the mean of its divisors is an integer number (22705020).

Almost surely, 2^1401250000 is an apocalyptic number.

1401250000 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 1401250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816401600).

1401250000 is an abundant number, since it is smaller than the sum of its proper divisors (2231553200).

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

1401250000 is an frugal number, since it uses more digits than its factorization.

1401250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1401250000 is about 37433.2739684896. The cubic root of 1401250000 is about 1119.0217861778.

Adding to 1401250000 its reverse (521041), we get a palindrome (1401771041).

The spelling of 1401250000 in words is "one billion, four hundred one million, two hundred fifty thousand".