19925530 has 16 divisors (see below), whose sum is σ = 37976040. Its totient is φ = 7501312.

The previous prime is 19925497. The next prime is 19925551. The reversal of 19925530 is 3552991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14722569 + 5202961 = 3837^2 + 2281^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58435 + ... + 58774.

Almost surely, 2^19925530 is an apocalyptic number.

19925530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19925530 is a deficient number, since it is larger than the sum of its proper divisors (18050510).

19925530 is a wasteful number, since it uses less digits than its factorization.

19925530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117233.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 19925530 is about 4463.8021909578. The cubic root of 19925530 is about 271.1044381712.

The spelling of 19925530 in words is "nineteen million, nine hundred twenty-five thousand, five hundred thirty".