1725132978 has 40 divisors (see below), whose sum is σ = 3931115760. Its totient is φ = 565294680.

The previous prime is 1725132977. The next prime is 1725133001. The reversal of 1725132978 is 8792315271.

1725132978 is a `hidden beast` number, since 1 + 7 + 251 + 329 + 78 = 666.

1725132978 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1725132971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80688 + ... + 99803.

It is an arithmetic number, because the mean of its divisors is an integer number (98277894).

Almost surely, 2^1725132978 is an apocalyptic number.

1725132978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1725132978 is an abundant number, since it is smaller than the sum of its proper divisors (2205982782).

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

1725132978 is a wasteful number, since it uses less digits than its factorization.

1725132978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180564 (or 180555 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 1725132978 is about 41534.7201507365. The cubic root of 1725132978 is about 1199.3359701214.

The spelling of 1725132978 in words is "one billion, seven hundred twenty-five million, one hundred thirty-two thousand, nine hundred seventy-eight".