1625140342564 has 6 divisors (see below), whose sum is σ = 2843995599494. Its totient is φ = 812570171280.

The previous prime is 1625140342531. The next prime is 1625140342577. The reversal of 1625140342564 is 4652430415261.

It can be written as a sum of positive squares in only one way, i.e., 1389923102500 + 235217240064 = 1178950^2 + 484992^2 .

It is a super-2 number, since 2×1625140342564² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1625140342564.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203142542817 + ... + 203142542824.

Almost surely, 2^{1625140342564} is an apocalyptic number.

It is an amenable number.

1625140342564 is a deficient number, since it is larger than the sum of its proper divisors (1218855256930).

1625140342564 is a wasteful number, since it uses less digits than its factorization.

1625140342564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406285085645 (or 406285085643 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 1625140342564 in words is "one trillion, six hundred twenty-five billion, one hundred forty million, three hundred forty-two thousand, five hundred sixty-four".