1401379225 has 9 divisors (see below), whose sum is σ = 1737942367. Its totient is φ = 1120953640.

The previous prime is 1401379223. The next prime is 1401379229. The reversal of 1401379225 is 5229731041.

It is a happy number.

The square root of 1401379225 is 37435.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 504496521 + 896882704 = 22461^2 + 29948^2 .

It is not a de Polignac number, because 1401379225 - 2¹ = 1401379223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401379223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 183432 + ... + 190918.

Almost surely, 2^1401379225 is an apocalyptic number.

1401379225 is the 37435-th square number.

1401379225 is the 18718-th centered octagonal number.

It is an amenable number.

1401379225 is a deficient number, since it is larger than the sum of its proper divisors (336563142).

1401379225 is an frugal number, since it uses more digits than its factorization.

1401379225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14984 (or 7492 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The cubic root of 1401379225 is about 1119.0561843093.

The spelling of 1401379225 in words is "one billion, four hundred one million, three hundred seventy-nine thousand, two hundred twenty-five".