1401356725 has 12 divisors (see below), whose sum is σ = 1738146564. Its totient is φ = 1120785920.

The previous prime is 1401356683. The next prime is 1401356743. The reversal of 1401356725 is 5276531041.

It can be written as a sum of positive squares in 6 ways, for example, as 651249 + 1400705476 = 807^2 + 37426^2 .

It is not a de Polignac number, because 1401356725 - 2²¹ = 1399259573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182667 + ... + 190183.

It is an arithmetic number, because the mean of its divisors is an integer number (144845547).

Almost surely, 2^1401356725 is an apocalyptic number.

It is an amenable number.

1401356725 is a deficient number, since it is larger than the sum of its proper divisors (336789839).

1401356725 is an equidigital number, since it uses as much as digits as its factorization.

1401356725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14984 (or 14979 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1401356725 is about 37434.6994778908. The cubic root of 1401356725 is about 1119.0501952336.

Adding to 1401356725 its reverse (5276531041), we get a palindrome (6677887766).

The spelling of 1401356725 in words is "one billion, four hundred one million, three hundred fifty-six thousand, seven hundred twenty-five".