1994797725 has 24 divisors (see below), whose sum is σ = 3332078400. Its totient is φ = 1052920320.

The previous prime is 1994797709. The next prime is 1994797759. The reversal of 1994797725 is 5277974991.

It is not a de Polignac number, because 1994797725 - 2⁴ = 1994797709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129825 + ... + 144374.

It is an arithmetic number, because the mean of its divisors is an integer number (138836600).

Almost surely, 2^1994797725 is an apocalyptic number.

1994797725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1994797725 is a deficient number, since it is larger than the sum of its proper divisors (1337280675).

1994797725 is a wasteful number, since it uses less digits than its factorization.

1994797725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274309 (or 274304 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 60.

The square root of 1994797725 is about 44663.1584754146. The cubic root of 1994797725 is about 1258.8276920582.

The spelling of 1994797725 in words is "one billion, nine hundred ninety-four million, seven hundred ninety-seven thousand, seven hundred twenty-five".