1025817201 has 24 divisors (see below), whose sum is σ = 1561110720. Its totient is φ = 647307936.

The previous prime is 1025817197. The next prime is 1025817209. The reversal of 1025817201 is 1027185201.

1025817201 is a `hidden beast` number, since 10 + 2 + 581 + 72 + 0 + 1 = 666.

It is not a de Polignac number, because 1025817201 - 2² = 1025817197 is a prime.

It is a super-5 number, since 5×1025817201⁵ (a number of 46 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (1025817209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272931 + ... + 276663.

It is an arithmetic number, because the mean of its divisors is an integer number (65046280).

Almost surely, 2^1025817201 is an apocalyptic number.

It is an amenable number.

1025817201 is a deficient number, since it is larger than the sum of its proper divisors (535293519).

1025817201 is a wasteful number, since it uses less digits than its factorization.

1025817201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1025817201 is about 32028.3811798224. The cubic root of 1025817201 is about 1008.5327192868.

The spelling of 1025817201 in words is "one billion, twenty-five million, eight hundred seventeen thousand, two hundred one".