149378385025 has 27 divisors (see below), whose sum is σ = 196809247369. Its totient is φ = 112448401280.

The previous prime is 149378384983. The next prime is 149378385041. The reversal of 149378385025 is 520583873941.

The square root of 149378385025 is 386495.

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

It can be written as a sum of positive squares in 4 ways, for example, as 3494110321 + 145884274704 = 59111^2 + 381948^2 .

It is not a de Polignac number, because 149378385025 - 2⁹ = 149378384513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 32849802 + ... + 32854348.

Almost surely, 2^149378385025 is an apocalyptic number.

149378385025 is the 386495-th square number.

149378385025 is the 193248-th centered octagonal number.

It is an amenable number.

149378385025 is a deficient number, since it is larger than the sum of its proper divisors (47430862344).

149378385025 is an frugal number, since it uses more digits than its factorization.

149378385025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138 (or 4569 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 149378385025 in words is "one hundred forty-nine billion, three hundred seventy-eight million, three hundred eighty-five thousand, twenty-five".