6525421750 has 128 divisors (see below), whose sum is σ = 13367877120. Its totient is φ = 2376604800.

The previous prime is 6525421741. The next prime is 6525421751. The reversal of 6525421750 is 571245256.

It is a super-2 number, since 2×6525421750² = 85162258030746125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6525421751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18805077 + ... + 18805423.

It is an arithmetic number, because the mean of its divisors is an integer number (104436540).

Almost surely, 2^6525421750 is an apocalyptic number.

6525421750 is an abundant number, since it is smaller than the sum of its proper divisors (6842455370).

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

6525421750 is a wasteful number, since it uses less digits than its factorization.

6525421750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 6525421750 is about 80780.0826317973. The cubic root of 6525421750 is about 1868.6854125469.

It can be divided in two parts, 6525 and 421750, that added together give a triangular number (428275 = T₉₂₅).

The spelling of 6525421750 in words is "six billion, five hundred twenty-five million, four hundred twenty-one thousand, seven hundred fifty".