1972437725 has 12 divisors (see below), whose sum is σ = 2446965780. Its totient is φ = 1577212800.

The previous prime is 1972437689. The next prime is 1972437751. The reversal of 1972437725 is 5277342791.

It can be written as a sum of positive squares in 6 ways, for example, as 407918809 + 1564518916 = 20197^2 + 39554^2 .

It is not a de Polignac number, because 1972437725 - 2¹⁰ = 1972436701 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1972437725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39731 + ... + 74319.

It is an arithmetic number, because the mean of its divisors is an integer number (203913815).

Almost surely, 2^1972437725 is an apocalyptic number.

It is an amenable number.

1972437725 is a deficient number, since it is larger than the sum of its proper divisors (474528055).

1972437725 is a wasteful number, since it uses less digits than its factorization.

1972437725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36880 (or 36875 counting only the distinct ones).

The product of its digits is 740880, while the sum is 47.

The square root of 1972437725 is about 44412.1348845110. The cubic root of 1972437725 is about 1254.1065422748.

The spelling of 1972437725 in words is "one billion, nine hundred seventy-two million, four hundred thirty-seven thousand, seven hundred twenty-five".