1925109640 has 32 divisors (see below), whose sum is σ = 4559472000. Its totient is φ = 729514944.

The previous prime is 1925109629. The next prime is 1925109673. The reversal of 1925109640 is 469015291.

It is a self number, because there is not a number n which added to its sum of digits gives 1925109640.

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, 1265760 + ... + 1267279.

It is an arithmetic number, because the mean of its divisors is an integer number (142483500).

Almost surely, 2^1925109640 is an apocalyptic number.

1925109640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1925109640 is an abundant number, since it is smaller than the sum of its proper divisors (2634362360).

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

1925109640 is a wasteful number, since it uses less digits than its factorization.

1925109640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533069 (or 2533065 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1925109640 is about 43876.0713829304. The cubic root of 1925109640 is about 1243.9945840550.

The spelling of 1925109640 in words is "one billion, nine hundred twenty-five million, one hundred nine thousand, six hundred forty".