25664858419330 has 48 divisors (see below), whose sum is σ = 52656520547520. Its totient is φ = 8977505120064.

The previous prime is 25664858419307. The next prime is 25664858419423. The reversal of 25664858419330 is 3391485846652.

It is a happy number.

It is a super-2 number, since 2×25664858419330² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399607542 + ... + 399671761.

It is an arithmetic number, because the mean of its divisors is an integer number (1097010844740).

Almost surely, 2^{25664858419330} is an apocalyptic number.

25664858419330 is an abundant number, since it is smaller than the sum of its proper divisors (26991662128190).

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

25664858419330 is a wasteful number, since it uses less digits than its factorization.

25664858419330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799279355 (or 799279342 counting only the distinct ones).

The product of its (nonzero) digits is 149299200, while the sum is 64.

The spelling of 25664858419330 in words is "twenty-five trillion, six hundred sixty-four billion, eight hundred fifty-eight million, four hundred nineteen thousand, three hundred thirty".