64925812402 has 48 divisors (see below), whose sum is σ = 111080604096. Its totient is φ = 28419098400.

The previous prime is 64925812397. The next prime is 64925812403. The reversal of 64925812402 is 20421852946.

It is a super-2 number, since 2×64925812402² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (64925812403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694888 + ... + 782764.

It is an arithmetic number, because the mean of its divisors is an integer number (2314179252).

Almost surely, 2^64925812402 is an apocalyptic number.

64925812402 is a deficient number, since it is larger than the sum of its proper divisors (46154791694).

64925812402 is a wasteful number, since it uses less digits than its factorization.

64925812402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88015 (or 88004 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 64925812402 in words is "sixty-four billion, nine hundred twenty-five million, eight hundred twelve thousand, four hundred two".