158256274200025 has 27 divisors (see below), whose sum is σ = 207111243213693. Its totient is φ = 119940691528800.

The previous prime is 158256274200001. The next prime is 158256274200043. The reversal of 158256274200025 is 520002472652851.

The square root of 158256274200025 is 12579995.

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 64071267829209 + 94185006370816 = 8004453^2 + 9704896^2 .

It is a de Polignac number, because none of the positive numbers 2^k-158256274200025 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, 1195033315 + ... + 1195165735.

Almost surely, 2^{158256274200025} is an apocalyptic number.

158256274200025 is the 12579995-th square number.

158256274200025 is the 6289998-th centered octagonal number.

It is an amenable number.

158256274200025 is a deficient number, since it is larger than the sum of its proper divisors (48854969013668).

158256274200025 is an frugal number, since it uses more digits than its factorization.

158256274200025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264890 (or 132445 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 158256274200025 in words is "one hundred fifty-eight trillion, two hundred fifty-six billion, two hundred seventy-four million, two hundred thousand, twenty-five".