154783581852025 has 27 divisors (see below), whose sum is σ = 223268047804911. Its totient is φ = 106137014681040.

The previous prime is 154783581852023. The next prime is 154783581852041. The reversal of 154783581852025 is 520258185387451.

It is a happy number.

The square root of 154783581852025 is 12441205.

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

154783581852025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55722089466729 + 99061492385296 = 7464723^2 + 9952964^2 .

It is not a de Polignac number, because 154783581852025 - 2¹ = 154783581852023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154783581852023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 435264444 + ... + 435619906.

Almost surely, 2^{154783581852025} is an apocalyptic number.

154783581852025 is the 12441205-th square number.

154783581852025 is the 6220603-rd centered octagonal number.

It is an amenable number.

154783581852025 is a deficient number, since it is larger than the sum of its proper divisors (68484465952886).

154783581852025 is an frugal number, since it uses more digits than its factorization.

154783581852025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710950 (or 355475 counting only the distinct ones).

The product of its (nonzero) digits is 107520000, while the sum is 64.

The spelling of 154783581852025 in words is "one hundred fifty-four trillion, seven hundred eighty-three billion, five hundred eighty-one million, eight hundred fifty-two thousand, twenty-five".