812150867025 has 72 divisors (see below), whose sum is σ = 1534704600000. Its totient is φ = 409414227840.

The previous prime is 812150867023. The next prime is 812150867029. The reversal of 812150867025 is 520768051218.

812150867025 is a `hidden beast` number, since 81 + 2 + 1 + 508 + 67 + 0 + 2 + 5 = 666.

It is not a de Polignac number, because 812150867025 - 2¹ = 812150867023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (812150867023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1660351 + ... + 2093099.

Almost surely, 2^812150867025 is an apocalyptic number.

It is an amenable number.

812150867025 is a deficient number, since it is larger than the sum of its proper divisors (722553732975).

812150867025 is a wasteful number, since it uses less digits than its factorization.

812150867025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433223 (or 433215 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 812150867025 in words is "eight hundred twelve billion, one hundred fifty million, eight hundred sixty-seven thousand, twenty-five".