140390401625 has 8 divisors (see below), whose sum is σ = 175207221384. Its totient is φ = 112312321200.

The previous prime is 140390401603. The next prime is 140390401631. The reversal of 140390401625 is 526104093041.

It can be written as a sum of positive squares in 4 ways, for example, as 115433536 + 140274968089 = 10744^2 + 374533^2 .

It is not a de Polignac number, because 140390401625 - 2²⁴ = 140373624409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561561482 + ... + 561561731.

It is an arithmetic number, because the mean of its divisors is an integer number (21900902673).

Almost surely, 2^140390401625 is an apocalyptic number.

It is an amenable number.

140390401625 is a deficient number, since it is larger than the sum of its proper divisors (34816819759).

140390401625 is an equidigital number, since it uses as much as digits as its factorization.

140390401625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123123228 (or 1123123218 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 140390401625 its reverse (526104093041), we get a palindrome (666494494666).

The spelling of 140390401625 in words is "one hundred forty billion, three hundred ninety million, four hundred one thousand, six hundred twenty-five".