20510825070 has 32 divisors (see below), whose sum is σ = 50923429920. Its totient is φ = 5280947840.

The previous prime is 20510825053. The next prime is 20510825081. The reversal of 20510825070 is 7052801502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11786961 + ... + 11788700.

It is an arithmetic number, because the mean of its divisors is an integer number (1591357185).

Almost surely, 2^20510825070 is an apocalyptic number.

20510825070 is an abundant number, since it is smaller than the sum of its proper divisors (30412604850).

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

20510825070 is a wasteful number, since it uses less digits than its factorization.

20510825070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23575700.

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 20510825070 in words is "twenty billion, five hundred ten million, eight hundred twenty-five thousand, seventy".