648620125379 has 4 divisors (see below), whose sum is σ = 648885846840. Its totient is φ = 648354403920.

The previous prime is 648620125313. The next prime is 648620125393. The reversal of 648620125379 is 973521026846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648620125379 - 2²⁴ = 648603348163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648620125379.

It is not an unprimeable number, because it can be changed into a prime (648620115379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132857069 + ... + 132861950.

It is an arithmetic number, because the mean of its divisors is an integer number (162221461710).

It is a 1-persistent number, because it is pandigital, but 2⋅648620125379 = 1297240250758 is not.

Almost surely, 2^648620125379 is an apocalyptic number.

648620125379 is a deficient number, since it is larger than the sum of its proper divisors (265721461).

648620125379 is a wasteful number, since it uses less digits than its factorization.

648620125379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265721460.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 648620125379 in words is "six hundred forty-eight billion, six hundred twenty million, one hundred twenty-five thousand, three hundred seventy-nine".