1025216164 has 12 divisors (see below), whose sum is σ = 2050432384. Its totient is φ = 439378344.

The previous prime is 1025216147. The next prime is 1025216167. The reversal of 1025216164 is 4616125201.

1025216164 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 36614863 = 1025216164 / (1 + 0 + 2 + 5 + 2 + 1 + 6 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (1025216167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18307404 + ... + 18307459.

Almost surely, 2^1025216164 is an apocalyptic number.

1025216164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1025216164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025216164 is a wasteful number, since it uses less digits than its factorization.

1025216164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36614874 (or 36614872 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1025216164 is about 32018.9969237014. The cubic root of 1025216164 is about 1008.3357108581.

The spelling of 1025216164 in words is "one billion, twenty-five million, two hundred sixteen thousand, one hundred sixty-four".