213280078307725 has 48 divisors (see below), whose sum is σ = 314959042206144. Its totient is φ = 141219647424000.

The previous prime is 213280078307711. The next prime is 213280078307749. The reversal of 213280078307725 is 527703870082312.

It is a happy number.

It is not a de Polignac number, because 213280078307725 - 2⁵ = 213280078307693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 408360691 + ... + 408882640.

It is an arithmetic number, because the mean of its divisors is an integer number (6561646712628).

Almost surely, 2^{213280078307725} is an apocalyptic number.

213280078307725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213280078307725 is a deficient number, since it is larger than the sum of its proper divisors (101678963898419).

213280078307725 is a wasteful number, since it uses less digits than its factorization.

213280078307725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817243438 (or 817243433 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 213280078307725 in words is "two hundred thirteen trillion, two hundred eighty billion, seventy-eight million, three hundred seven thousand, seven hundred twenty-five".