1301321970025 has 81 divisors (see below), whose sum is σ = 2063944860663. Its totient is φ = 810939914400.

The previous prime is 1301321970023. The next prime is 1301321970031. The reversal of 1301321970025 is 5200791231031.

The square root of 1301321970025 is 1140755.

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., 468475909209 + 832846060816 = 684453^2 + 912604^2 .

It is not a de Polignac number, because 1301321970025 - 2¹ = 1301321970023 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1301321970023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 439189194 + ... + 439192156.

Almost surely, 2^{1301321970025} is an apocalyptic number.

1301321970025 is the 1140755-th square number.

1301321970025 is the 570378-th centered octagonal number.

It is an amenable number.

1301321970025 is a deficient number, since it is larger than the sum of its proper divisors (762622890638).

1301321970025 is an frugal number, since it uses more digits than its factorization.

1301321970025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 1301321970025 in words is "one trillion, three hundred one billion, three hundred twenty-one million, nine hundred seventy thousand, twenty-five".