1975452690625 has 24 divisors (see below), whose sum is σ = 2471489173944. Its totient is φ = 1578870000000.

The previous prime is 1975452690611. The next prime is 1975452690647. The reversal of 1975452690625 is 5260962545791.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1965727377936 + 9725312689 = 1402044^2 + 98617^2 .

It is not a de Polignac number, because 1975452690625 - 2¹¹ = 1975452688577 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a Duffinian 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, 3017725 + ... + 3613525.

It is an arithmetic number, because the mean of its divisors is an integer number (102978715581).

Almost surely, 2^{1975452690625} is an apocalyptic number.

It is an amenable number.

1975452690625 is a deficient number, since it is larger than the sum of its proper divisors (496036483319).

1975452690625 is an frugal number, since it uses more digits than its factorization.

1975452690625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596887 (or 596867 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 61.

The spelling of 1975452690625 in words is "one trillion, nine hundred seventy-five billion, four hundred fifty-two million, six hundred ninety thousand, six hundred twenty-five".