20525401550 has 24 divisors (see below), whose sum is σ = 39108403152. Its totient is φ = 8009912000.

The previous prime is 20525401493. The next prime is 20525401579. The reversal of 20525401550 is 5510452502.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5004146 + ... + 5008245.

It is an arithmetic number, because the mean of its divisors is an integer number (1629516798).

Almost surely, 2^20525401550 is an apocalyptic number.

20525401550 is a deficient number, since it is larger than the sum of its proper divisors (18583001602).

20525401550 is a wasteful number, since it uses less digits than its factorization.

20525401550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012444 (or 10012439 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 20525401550 in words is "twenty billion, five hundred twenty-five million, four hundred one thousand, five hundred fifty".