31925745001 has 4 divisors (see below), whose sum is σ = 32788603012. Its totient is φ = 31062886992.

The previous prime is 31925744999. The next prime is 31925745083. The reversal of 31925745001 is 10054752913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10054752913 = 67 ⋅150070939.

It can be written as a sum of positive squares in 2 ways, for example, as 28479937600 + 3445807401 = 168760^2 + 58701^2 .

It is a cyclic number.

It is not a de Polignac number, because 31925745001 - 2¹ = 31925744999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 862857973 = 31925745001 / (3 + 1 + 9 + 2 + 5 + 7 + 4 + 5 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31925745091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431428950 + ... + 431429023.

It is an arithmetic number, because the mean of its divisors is an integer number (8197150753).

Almost surely, 2^31925745001 is an apocalyptic number.

It is an amenable number.

31925745001 is a deficient number, since it is larger than the sum of its proper divisors (862858011).

31925745001 is an equidigital number, since it uses as much as digits as its factorization.

31925745001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862858010.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 31925745001 in words is "thirty-one billion, nine hundred twenty-five million, seven hundred forty-five thousand, one".