1393237926025 has 45 divisors (see below), whose sum is σ = 1901339277015. Its totient is φ = 1012744590000.

The previous prime is 1393237926019. The next prime is 1393237926053. The reversal of 1393237926025 is 5206297323931.

The square root of 1393237926025 is 1180355.

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., 501565653369 + 891672272656 = 708213^2 + 944284^2 .

It is not a de Polignac number, because 1393237926025 - 2¹¹ = 1393237923977 is a prime.

It is a super-2 number, since 2×1393237926025² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 714113800 + ... + 714115750.

Almost surely, 2^{1393237926025} is an apocalyptic number.

1393237926025 is the 1180355-th square number.

1393237926025 is the 590178-th centered octagonal number.

It is an amenable number.

1393237926025 is a deficient number, since it is larger than the sum of its proper divisors (508101350990).

1393237926025 is an frugal number, since it uses more digits than its factorization.

1393237926025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 1393237926025 in words is "one trillion, three hundred ninety-three billion, two hundred thirty-seven million, nine hundred twenty-six thousand, twenty-five".