25643266462 has 48 divisors (see below), whose sum is σ = 43319430000. Its totient is φ = 11370078720.

The previous prime is 25643266459. The next prime is 25643266471. The reversal of 25643266462 is 26466234652.

It is a super-2 number, since 2×25643266462² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 12996108 + ... + 12998080.

It is an arithmetic number, because the mean of its divisors is an integer number (902488125).

Almost surely, 2^25643266462 is an apocalyptic number.

25643266462 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25643266462 is a deficient number, since it is larger than the sum of its proper divisors (17676163538).

25643266462 is a wasteful number, since it uses less digits than its factorization.

25643266462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3278 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 46.

The spelling of 25643266462 in words is "twenty-five billion, six hundred forty-three million, two hundred sixty-six thousand, four hundred sixty-two".