21214064263025 has 24 divisors (see below), whose sum is σ = 26385825544320. Its totient is φ = 16919423605440.

The previous prime is 21214064263003. The next prime is 21214064263037. The reversal of 21214064263025 is 52036246041212.

It is not a de Polignac number, because 21214064263025 - 2¹⁶ = 21214064197489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21214064263025.

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, 24595016 + ... + 25442934.

It is an arithmetic number, because the mean of its divisors is an integer number (1099409397680).

Almost surely, 2^{21214064263025} is an apocalyptic number.

21214064263025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21214064263025 is a deficient number, since it is larger than the sum of its proper divisors (5171761281295).

21214064263025 is a wasteful number, since it uses less digits than its factorization.

21214064263025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850985 (or 850980 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 21214064263025 in words is "twenty-one trillion, two hundred fourteen billion, sixty-four million, two hundred sixty-three thousand, twenty-five".